I don't know that the influx of AI spam would necessarily result in people disengaging and choosing to seek out real content, though. Social media feeds have been serving up less and less content from our actual real life contacts for a while now (partly because people seem to be posting less). As long as it's engaging I think a significant chunk of people aren't going to care whether it's AI

(anecdotally, my mother loves AI generated videos, perhaps it's just novelty at the moment and it will wear off)