People creating their own platforms means progress, whereas centralisation (like moving from blogs to social control media) is the opposite of progress
If it was googlebot, it would be possible to argue that you'd at least then get referral traffic from Google Search. With LLMs, all you get is plagiarised.
If people are willing to tolerate standard declines and enshittification (nowadays sold as "pivot to AI" or "replaced by AI" or "AI layoffs") they will pay for it some other way