The point is that a lot of people wouldn't, and that in turn means that if parents want to not have their kids on social media, they can do that without isolating them from their entire peer group.
LOL, one of the kids in the peer group will figure a way around the ban and then share it with their peer group... and now, it will be impossible for the parents to monitor it. You clearly didn't think this through... but authoritarians never think things through. They assume that what they say is true and real, but, reality is far more complex than they give it credit for, so they, and you, are blind.
Meta knows everything about you, and you don't have to prove your age. They know when you were born. They sold your private information to Cambridge Analytica to swing elections, and foment coups.
If I understand your argument correctly, what you are saying is that since Meta already thinks it knows everything about you, then you should be forced to validate that information?
Are you guessing, or has there been a study showing that educating kids reduces their capacity to be manipulated by social media disinformation and bullying?
I would be fascinated to see a study showing that education does NOT help people to be avoid being manipulated. I mean, if you tell someone about a trick that you are about to perform on them, do you REALLY think they would then fall for the trick after being informed? Is that REALLY your thesis here? What the fuck is wrong with you?