Agreed.
Here's the thing. You need a tad bit of campy... A tad bit of feel good.
The super hero movies ARE TOO ADULT...got to get back to the comic roots.
I find this kinda funny to me, having collected literally thousands of comic books growing up (virtually all DC or Marvel). I view almost all campiness (is that a word? ☺️ ) in these films and television as insulting to anyone's intelligence.
Take the old
The Incredible Hulk series for example. I admired how much of Bill Bixby's work was delivered straight forward and uncontrived but Lou Ferrigno's conributions were reduced to basically vogueing (flexing muscles) for the camera, weakly performing acts of super strength Mighty Mouse would laugh at, and running meekly away in slow motion at the end of his segment. I would switch back-and-forth from thinking "good stuff" to "that makes me want to scratch my eyeballs out."
I do find some campy stuff tolerable though if the comedic premise is measured.
Guardians of the Galaxy was littered with such moments but it didn't seem like they were dumbed down to the audience, like Groot eating a flower out of his shoulder while the group discusses a suicide mission and Star Lord reacts with subdued irritated disbelief. That sort of stuff fits my ideal. On the other hand, the ever telescoping clown hand gun The Joker uses in Tim Burton's
Batman to shoot down the batplane is campy genius that makes me want to hurl.
It's all individual personal preferences though.