Seriously? Selective sampling and click bait. Two recent programs come to mind and I'm sure this list is not exhaustive. "The boys" and "Orville". Both chock full of "heroes" who in-between being heroes are preoccupied with banging each other, getting drunk, eating or failing themselves. The last episode of "The Boys" ends with Homelander jerking off while perched on a ledge over the city and raging at the unfairness…
The boys has had great success but still has orders of mangnitude less cultural impact than the MCU for instance. It's actually making, to some extent, the same point the article is making: super hero movies are bland and childish.
I didn't even know what Orville is, sounds interesting.
I'd say the _slice of current cinematic culture_ selected by the article is broad and impactful, and represents fairly well an important part of the whole. It's not the whole story, and you're right in pointing that out, but I don't agree that that invalidates the article.