Parents are failing kids. Not the government. Not big tech companies.
You might be able to pull it off in specific environment, but I’m not convinced the benefits of such an individual mandate outweigh the negatives (or rather, there are better alternatives).
My point is that kids need to be able to play together, regardless of what ‘play’ means in this generation. If I make mine unable to play/communicate with his peers abot any topic relevant to them, I’m essentially deliberately isolating him.