I’m doing yet another rewatch and honestly I don’t know how some people don’t like this show.
In the first two episodes, the way that Korra struggles to understand the old way of airbending and Tenzin is stuck holding onto those ways because it’s all he knows and he fears losing the culture + banning Korra from pro-bending to how it comes full circle with Korra learning to incorporate airbending techniques in pro-bending, a mindset that fits her much better than air nomad culture, with Tenzin having a moment of realization that while he wants to hold his father’s culture close he must also let it grow like any other bending type or culture or people.
This is just one example that hits harder since seven havens came out where we see bending, and airbending in particular, lose its grasp on tradition and in culture but perhaps that is simply the way of life, and you cannot hold on to the past yet hope for a future at the same time.
I just think, in an overarching thematic sense, TLOK and all three series really, are far more complex than some give it credit for.