Depressingly bad argument that seems to say: we think it’s bad for children and adults, but we don’t ban it for adults so we shouldn’t ban it for children.
English societies have a long history of regulating the behavior of others - see English Poor Laws.
It’s an interesting perspective at least, I hadn’t thought of the social media ban in that way.
I happen to think we should still ban bad things (smoking, drinking, gambling, and probably social media) for kids. But I appreciate the argument.