I didn't mean CSS is useless, I meant it is not necessary for every website to define their own CSS to look nice and not ugly. The problem is almost no ordinary user knows they can define their own defaults (fonts, background - in browser settings, more complex - in user CSS).
I think people are just burning out from the oppresive tech environment, the endless hypes, the lack of a feel-good factor. All these negatively experienced developmemts are taking their toll. This forces people into all sorts of extreme corners, like the gemini protocol or css-less sites.