There's an amazing subtlety here, which is that Governments are slow to function and rarely regulate well. That they're targeting Meta instead of what kids actually use (TikTok) highlights this fact.
So not only will they fail to achieve their goal, they're not even going after the right player.
But hey the cultural movement of Americans these days are to hate on big tech, and Facebook in particular. So here we go.
This is simple Nation State realpolitik. TikTok is a propaganda threat controlled by a non-friendly state to the US.
Any other way to look at this is naive.