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 odd to me.
This has been a half formed thought bouncing around in my head, but I think part of the reason for the resurgence of comic books and superheroes is the simple fact that we live in a complex world where there are very few instances of Good and Evil. We live in a subtle, complex, and nuanced world, where if you take the time to dig in to an issue, you find more complexity...and a lot of really morally compromised people. We don't live in a Good/Evil world, but we want to. I think that comics are a retreat from that, a mental/moral bulwark that gives us an outlet for our need for Right and Wrong. We might not be able to figure out without coming to blows, but we sure as hell can agree that Thanos is a piece of shit, and that Batman is wicked cool.
Is this a retreat from reality? Sure, but we need that. Moore is wrong here to suppose that adults need to be doing Adult Things at all times. The world is hard enough as it is - taking a few hours respite from it is hardly a crime.