Aren't age limits already in the ToS of most social media platforms? If the parents/children break the ToS their accounts should be deleted and their emails or

Aren't age limits already in the ToS of most social media platforms? If the parents/children break the ToS their accounts should be deleted and their emails or even IPs banned. I don't really see why we need more government involvement here. It's just going to be ham-fisted and create unintended consequences like the kids in Australia having to use adult YouTube because they can't have a kids account anymore.