As a father of 4 ranging from 10 to 30+, I certainly hope the law will not practically work and that kids will find a way to use social media.
Interesting. My kids aren't allowed on social media, and they're happier and less moody than their friends who are addicted to it. They see it, and don't even want social media anymore because their friends spend so much time on their phones rather than being present and having real experiences.
I don't think I would wish social media on any child, though I believe it's a problem that can be solved not by more laws, but by better parenting.