I have a bias towards Marvel, simply due to my exposure to this characters as a child. They have always had their issues (don't get me started about Snowflake and Safe Space...), but their constant pursuit of inclusivity, social justice, and personal identity is what helped turn childhood nostalgia into a far greater sense of appreciation for me.
This documentary is mostly fluff, but it gets at so many of these key philosophies, and how they have been the established lifeblood since the beginning. But it's crowning achievement is this quote, right near the end:
"I think in a lot of these superhero stories, the aspiration is the hero.
What always spoke to me about Marvel was the that the aspiration was the human. And that's what's really exciting to me. Where we are right now. Who are you? Who do you want yourself to be?"