This is true about the Joker. Wonder Woman captured the 1910s era of World War 1. Joker didn't do as good of a job to capture the 80s settings or the themes that defined the 80s. It is still a movie worthy of rewatch.
Had Endgame had any true cinematic meaning. It should have won 3-5 Oscars. Avatar was about blue people, I believe to be spoofy alternative universe native Americans. Its a better political movie to Endgame that has nothing to say about life.