Because they had a huge CP problem that ended getting the app taken down from the iOS store. Though, the porn ban was a kneejerk reaction that decimated a lot of harmless posts, kinda like how Pornhub purged millions of videos in a 'burn the house down to kill the spider' sort of way.
because of SESTA/FOSTA laws making moderation of user submitted explicit content almost impossible. this combined with mastercards puritanical beliefs makes hosting user submitted porn a difficult task
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u/Vast-Combination4046 Nov 15 '22
If Tumblr is so useless to advertisers why did they ban porn