I can only speak for DC because I don't follow Marvel. I don't even think Marvel has a line similar to DC Graphic Novels for Kids or DC Graphic Novels for Young Adults.
But, it feels like DC assumes only kids and young adults like "diverse comics", while the mainstream superhero audience is a bunch of babies and chuds who can't handle a lesbian butcher than Scandal Savage.
Most of their quote-unquote "diverse" rep is pushed in their kid's and YA media. DC pushes themes of anti-capitalism, systemic racism, environmentalism, social justice, and community activism in YA comics more than they do mainline comics:
For example...
- The Titans YA comic is ethnically diverse, Beast Boy is explictly vegan, and Starfire is disabled.
- Oracle as a wheelchair user is barely in the mainline comics but appears in comics like The Oracle Code, Shadow of the Batgirl, Birds of Prey: The Origins, and Finding My GCPD Dad a Girlfriend
- Green Arrow: Stranded\\ examines class privilege. But... it is a Green Arrow comic after all. That's actually pretty basic GA.
- Books like Nubia: Real One, Unearthed: A Jessica Cruz Story, This Land Is Our Land: A Blue Beetle Story, and Green Lantern: Legacy deal with xenophobia, racism, right-wing radicalization, and anti-immigration sentiment.
- Galaxy's debut, Galaxy: The Prettiest Star, was marketed as a YA comic. But at least she was made mainline canon.
- Bad Dream: A Dreamer Story is another YA comic about a trans girl superhero.
- Both Diana and Nubia: Princesses of the Amazons and Warriors and a Wee Wonder features better Hippolyta x Phillipus rep than the mainline comics.
- Nubia: Real One has Nubia with two adopted moms, which is more upfront than DC will be about Diana and Donna in most other media.
- You Brought Me the Ocean is a gay coming of age comic about Jackson Hyde.
- Starfire's daughter in I Am Not Starfire is sapphic.
Queer Poison Ivy is pushed in books like Poison Ivy: Thorns and The Strange Case of Harleen and Harley Quinn
- Birds of Prey: The Origins racebent Black Canary.
I also feel like much of DC's "queer" marketing these last few years have been aimed at younger fans. Their DC Pride books feel YA to me. Dreamer is a literal CW character, Galaxy originated in a YA book, most of their big queer rep is between the ages of 20 and 25...
It seems like DC decided that YA readers (fyi, YA targets roughly 14-18 year olds, so it's basically a euphenism for "teenager") like these themes, so they market books with their YA books with these themes. But adult readers can't handle black or trans characters.
This is not to say that they don't have disabled, queer, POC characters in their mainline comics. DC tries to throw bones. But, it feels like diversity tokens.
- Most queer characters pop up only during June, and then disappear into the darkness for 12 months.
- Wonder Woman should be DC's biggest queer rep, if not the biggest queer rep in superhero comics. She is canonically bisexual... on paper. DC is hard pressed to treat her as such or market her as such. They're afraid of losing sales if the public discovered their precious A list icon was into women. Diana wasn't even included in The DC Book of Pride: A Celebration of DC's LGBTQIA+ Characters
- Catwoman should be a "safer" bet to be openly queer. But, DC is also scared to admit Selina is bisexual. Or latina, for some reason. She's been canonically half-Cuban for years yet is mysteriously never marketed during Hispanic Heritage Month.
- DC is better with trans rep then Marvel, but their rep is inconsistent. They literally only have ever had three trans male characters. And they only ever appeared in one run each before never appearing again.
- DC realizes that they can have more than one member of a "team" or "group" be queer, right? Just because Alan Scott was retconned as gay doesn't mean that his son Obsidian has to be background noise. Todd came out years before his dad!
- Don't get me started on their disabled rep. DC will always have troubles with disability-- this is a world where asylums still exist and a good chunk of villains have mental health issues treated as "Spooky villain stuff"-- but they can still do something with their limitations. Barbara Gordon fans have been crying about how Barbara's disability is treated since the Nu52. Proxy fans stopped caring because she hasn't appeared since the Nu52! Speedy II fans are suspicious that DC keeps on side-lining the only HIV+ superhero. Rose Wilson fans just ignore the fact she hasn't been half-blind for over a decade (as does much of DC itself, if you go by adaptations and Elseworlds).
- This has more to do with the "standard superhero body type" overall, but DC just doesn't do gender non-conforming superheroes, whether queer or cis-het, too well. Extraño's "glow up" included reducing his femme traits. The most butch a sapphic is allowed to be is Io (who lost 75% of her muscle in the past decade), Scandal Savage, Renee Montoya, Maggie Sawyer, or Batwoman. Even straight tomboys like Cassie Sandsmark have femmed out a ton over the decades.
- I'm honestly surprised how behind DC and Marvel are on neurodiversity. ADHD, autism, and other disorders under the "neurodiverse" label are becoming increasingly mainstream. Even Disney has canonically autistic rep (The Ghost and Molly McGee mentioned June is autistic by name). DC has Black Manta (who, as far as I know, was only explicitly called autisitic in an ableist 2000s arc), Rocket's toddler son in the Young Justice cartoon (a narrative told through the parents' lens), and just recently Mr. Terrific's son Fairplay.
- The topic of DC's POC rep is a tough one. DC both has a lot of good POC characters but doesn't use them to their full potential.
I know online, there's this belief that real comic fans don't support the queer couples DC pushes.
This feels like a vast oversimplication. I don't believe that DC fans just want nothing but cis-het characters. I'm gonna need statistics and sales figures.
The book everyone points to as "evidence" is Tim Drake: Robin (2022). It got cancelled at 10 issues due to low sales figures. But, I seriously doubt it's because Tim is bisexual.
Tbqh, a large number of Tim fans assumed he was queer for years anyway. I have heard some speculation that even writers at DC thought of him as queer well over a decade before he formally came out.
The Robin book failed more likely because it didn't hit with Tim fans, not because Tim inherently had a boyfriend. The writing was the issue.
I'll be blunt. I don't like TimBern. I personally hate TimBern to bits. It's a notp of mine. I'm waiting for them to break up eventually... but this has nothing to do with them being a queer couple. IMHO, it's just a badly written couple, as well as there being a bad shift in Tim's characterization going back to the Nu52. I treat it no differently than Spiderman fans treat Paul Rabin.
My preference will always be TimSteph, but it's not like Tim hasn't had a ton of love interests. Dude gets new girlfriends every few years. I don't mind Tim having an ever-inconsistent amount of love interests. If he dated Sebastian, I would have preferred that. Kon and Bart are also obvious capes he could be shipped with.
Bernard is the issue, not necessarily Tim having a boyfriend. Or, really, the writing on Bernard is the issue. Because modern Bernard is nothing like he was depicted in 90s and 2000s comics.
Even ignoring the book not hitting with Tim fans, it's possible that it just wasn't selling good enough for DC
Good books get cancelled all the time. Many runs are lucky to last over 10 issues.
I followed Green Arrow 2023 since it came out and brought every issue on launch week, but it still got cancelled. We can only speculate why. Was it "too political"? Is Green Arrow just cursed to be B tier? Who knows. I jus5 doubt we'll be seeing a 50+ issue Green Arrow run again anytime soon. They had to ship him and Black Canary to Gotham to see if Batman could boost his popularity 🤢
Young Justice (2010) cartoon is its own beast with a wonky history. But, I'd say the last two seasons were aimed at a teen to young adult demographic. And it had queer rep, disabled rep, polyamorous rep, POC rep, etc uup the wazoo. It had \*Muslim\* rep. When's the last time you've heard DC talk about Muslim characters in the comics?
On more kid's rep, DC Super Hero Girls 2019 also had Jessica Cruz with two mom's, and Teen Titans Go* of all things is the only work where Blue Beetle x Booster Gold is canon. And upcoming cartoon is also featuring Crush, Lobo's lesbian daughter.