The end is coming though... make no mistake.
Why you need to write that article is because we've been saying this since it was announced that Burton got hold of Batman in the late 80s. Everyone has predicted failure for superhero movies... And yet they persist. Even when they do fail! The audience demand has been consistently in place since the 1960s. We've had superhero TV and movies hitting the airwaves and the silver screens again and again and again, with very few dry years, for 50 years now.
When there wasn't a successful entry in the genre, it didn't stop the attempts to reboot the genre. When the genre couldn't find a foothold, it found refuge in the children's market. When the genre couldn't handle the classic superheroes, it retrofitted itself to modern advancements -- GI Joe and Transformers are ultimately "superhero" shows.
Not a single year, since 1977, has passed without a superhero movie.
This is also true for TV, with only a small drought in the 80s that was peppered with TV movies and backdoor pilots.
Furthermore, the genre has so heavily imprinted itself on our psyche that it's bled into all the other genres. Is not Ripley a superhero? Or John McClaine? Or Indiana Jones? Or Ron Burgundy?
Even if the genre scales back -- which, in 50 years, it has never done -- couldn't our modern superheroes stalking through the other genres still count?