I don't see how this is news. Alan Moore has been decrying and hating on superheroes for the entirety of his career, for largely the same reasons throughout. This is great when it's communicated through his work - showing what comics could be without superheroes, or critiquing the genre from within (Watchmen and Marvelman/Miracleman reboot come to mind), but his personal disdain for the consumers of his products is o…
Take Guardians of the Galaxy for example. A fun superhero movie! Except it’s really just a science fiction movie that avoids the “SF” term. It’s pretty similar to something like Star Wars in terms of the characters and technologies shown... but for some reason, Luke Skywalker isn’t a “superhero.”
Or consider the Greek myths. Instead of superheroes, they had “gods” and “demigods” and such. What’s the difference? None, really.
Humans have always enjoyed morally unambiguous tales of heroes beyond the ordinary. There’s a place for complex entertainment too, but it’s unreasonable to expect it to dominate.