Well, the actors who did the first American Pie movies are in their 40s now, aren't they? It's just the same people doing the same jokes, nothing surprising
But to come back to the topic of superhero movies, I've stopped watching them a couple years ago, and now just feel like there's a steady flow of superhero related memes in my social network feeds, without starting or stopping point. I don't know what are the movies called, what are most superheroes called (I recognise Superman, Batman, Spiderman and a couple X-Men, but that's the full extent of my knowledge) or what universe they're from, but there's a set of superheroes I've seen non-stop for the last 6-7 years, and at this point I'm afraid to ask where they're from!
It's like fantasy themed anime or battle royale video games these days. You just get a steady flow of knights with huge swords and witches with impressive hairstyles, or a flow of guys running in the woods of an ever shrinking battlefield with weapons they found laying around, and don't really find what's the difference between them.

In fact, I think that there's a huge loss of originality in all media these days, but here's a little question : has it always been this way? Hasn't there always been trends in media, leading to a wave of very similar things (remember the avalanche of teen fantasy novels after the success of Harry Potter? The strategy video games after Total Annihilation and Command and Conquer?), and we just get a feeling of diversity from the fact that most of these less original titles were quickly forgotten, and only the trope creators and truly original creations are remembered after a couple years.