Whenever a platform is owned by shareholders who then need to extract rents from the ecosystem, this will happen. Whether it’s couchsurfing or twitter.
Expect it to happen to Reddit etc.
There is a direct line from the profit motive to platforms becoming enshittified, promoting the most outrageous content and making people emotional and angry.
The AI is just another level of appropriating human work. Whether it’s google’s disruption of publishers through AI-generated answers, or OpenAI training on artists’ work.