> The case against social media is pretty weak.
It's worth scrutinizing the philosophical mental model implicit in your opinion.
Do you wait for conclusive empirical evidence before doing anything? Or do you run an experiment in one country based on an informed opinion and see what happens?
I am more inclined to pursue the latter model for this question.
The case against youth social media makes logical sense, there is circumstantial evidence that it's having a negative impact, and I have enough experience with data to know how difficult it is to demonstrate that it's true empirically without a large-scale natural experiment like the one that's about to happen when this law passes.
A lack of evidence should not paralyze you on questions where conclusive evidence is very hard to assemble. Especially when action will create evidence.