Zuck plans to replace Mid-Level engineers with AIs this year

Translation: Meta already needed to lay off some staff and they're using this as an opportunity to build AI hype

Exactly. See also recent SalesForce comments along these lines.

I plan to replace meta with real social engagement again this year, so there's that...

I don't even believe the current state of art of AI could allow that. Maybe Meta just advertises its own AI.