I agree that Nazism was morally wrong from an objective standpoint. It was, however, a positive good within German culture in the 1930s. If you don't like that example because it touches on morality, there are innumerable other examples of cultural differences among societies, even within our own over time, that are less obviously morally black and white. The Puritan work ethic, for example, seems far removed from the Millennials' "Me Me Me" generation. Other than the statement that Nazism was objectively wrong (because some people don't believe there is such a thing as objective morality), this all seems very obvious and noncontroversial to me.
In response to your questions, all I'm saying is that if I thought Hollywood was directing our cultural zeitgeist through superhero movies, I would be depressed. I've already explained why. Fortunately, I don't think that's actually what is happening.