This author is seriously suggesting that governments ban children's use of social media, and that can't really be done without completely destroying internet anonymity. Any policy that actually achieved this, without being trivial to circumvent, would basically need to replicate the great firewall of China. Doing this in a half-assed way is even worse than not doing anything at all. If you just require ID checks for…
They will figure out a solution very quickly or they will simply cease to exist, and either way the problem will be solved.