This seems naive. As long as people are "enjoying" the AI-infested social networks, or at least not annoyed enough to leave, they will stay on them, and become further disconnected from reality. We have half of EU teenagers talking to chatbots regularly. Alienated people flock to them.
For one point, I was a daily active user of Reddit for 10 years, I deleted my account and left the platform in January over LLM content.
Actively seeking out a chatbot is different than wanting to talk to humans.
Social media that caters to what the user wants/interacts with can become infinitely more so. This is already applied to entertainment content across tv and the internet.
At some point an instagram/tiktok/etc user could see nothing by real people and not even know what is promoted vs ad vs post.