The problem usually is not a framework / tool / whatever technical thing used.

The problem is overloading a site with stuff that aggressively consumes user's resources and tries to hijack user's attention, in an attempt to make a few cents on ads.

If HTMX were all the rage, I'm certain that many terribly heavy sites would be created with it, given the same incentive structure.

Everybody, everywhere, thinks it's easier or even 'better' to just keep cramming more things into the same eight pages on a site, instead of continuing to make more pages.

So everything becomes garbage and quickly.