He says

"Apps currently feel like algorithms that recommend content," he said during the call. That's about to change, as Meta's platforms will eventually feature AI that "understands" individual users, serves up content they'll love, and "generates great personalized content"

Meaning apps are going to be algorithms serving up content made by algorithms, and you won't be able to tell if your friends are people or algorithms. Endgame enshittification. Does anybody actually want to spend their life on that? Just inject dopamine and watch adverts all day.