This is going absolutely nowhere, I guarantee it. Meta is a business, so yes, they intentionally seek to increase engagement, this isn't illegal (see every other industry with children as a demographic).

"Manipulative features" is incredibly subjective and hard to prove. "Lowering self-esteem" is also very, very difficult to prove, especially since an Oxford study came out recently showing no evidence linking Facebook adoption and negative well-being. On top of that, proving Meta did this all intentionally for profit is basically impossible, unless they have some sort of crazy smoking gun that I'm sure they don't have, otherwise they'd be approaching this from another angle.

I know everyone around here wants to see big social media fall, but this ain't it. At most they'll settle for a small undisclosed amount, allowing the AG a "show of force" and Meta to avoid anything public.