The deconstruction of the superhero genre is something that has been going on for a few decades now, and is often rather repetitive. Generally, it is an excuse to show classic or recognizable characters doing things that normally they wouldn’t, often of a more R-rated variety.
That said, when the deconstruction is done right, such as in Watchmen, the work says something about the genre’s conventions and tropes in a way that can be highly entertaining for the reader, while also giving the reader a chance to think over the sorts of things that are taken for granted.
But one of the best deconstructions out there doesn’t just cover superheroes, but pulp literature and genre storytelling in general. That would be the comics series Planetary, written by Warren Ellis and illustrated by John Cassaday.