@kingmongoose7877 Of course Scorsese's mastery, knowledge and love of movies is matched by few and surpassed by none. But I do find it amusing that the he criticises lowbrow superhero genre movies when every third film he makes has a bunch of Irish or Italian guys telling each other to fuhgeddaboudit, then shooting each other in the head. (Yes, I'm exaggerating, but not by that much.)
My point? There are bad, mediocre and good superhero movies, just as there are bad, mediocre and good gangster movies. And every so often there are great genre movies, like The Godfather, or - for my money - Logan (which I think deserved Oscar nominations for picture, director, adapted screenplay, actor, supporting actor and supporting actress).
And, basically, you just need a lot of movies to be made before a masterpiece is produced. For how many decades were westerns a popular genre? Were directors complaining about the guns'n'horses theme parks in the 1950s? Most westerns that were made over that time have been forgotten, but the great ones like Shane or Unforgiven live on. In fifty years most superheroes will have been forgotten, but a handful will live on.
To address @chickenwing 's post more directly: I remember reading articles a few years ago about how the age of the movie star was dead (Tom Cruise being cited as one of a few exceptions), and that the age of the franchise/brand (Marvel, Star Wars, Pixar) had arrived. If the age of the franchise is dying, what will rise to take its place?