I would love if it could be a false dichotomy, but given conservative estimates pin about 30% of online posts to AI it seems like there may be a third outcome: we patch the visible holes of humans posting less and less from disinterest by making the bots post more and more.

The end result is that comment sections aren't enticing to join in on, just read. Which is perfect for ad impressions.

The sites that are there for ad impressions already worked this way though. The incentives were geared toward poor human discussion as well (c.f. reddit as a best case, and e.g. instagram/tiktok/youtube as what they'd like to be). So the problem here is ads, a desire to grow to include the entire world to show them ads, and a desire to do whatever it takes to keep their attention to show them ads.