I agree. It's obvious that you can have a limited amount of "deconstruction" of particular tropes and patterns, but if you let that become dominant within the mainstream then it destroys the medium.
I agree, and I think the same is true of other reactionary or transgressive types of stories and characters.
Wolverine, for instance, was originally cool because he broke the rules of being a goody-goody superhero. He was a killer, and lived a dissolute lifestyle. He had a bad attitude, and smoked like a chimney. This was attractive for its own rakish sake, and led to some nice dramatic conflict with the more traditional heroes.
Since then, though, the idea of Wolverine has permeated the comics medium so much that damn near every character is a hard-bitten outsider with a mean attitude. I mean, they gave Superman a healing factor. Wolverine isn't transgressive any more: he's the new norm. And that's not really a good thing for the medium. Comics are so addicted to being transgressive that you can go into a comics store and not find anything on the racks that's suitable for children. Which is one of the reasons why sales numbers are so abysmal.