> If you knock the percentage down far enough, you break the network effect to the point where those who don't want to don't feel pressured to.

I've seen this argument a lot, and I don't think it really matches reality - I very much expect that the problem users of social media who are teens will tend to be the ones that will want to get around the ban (and will easily be able to).

Kids who just have an account because they are "pressured" to probably aren't actually really using it much or problematically?

And the other problem is that everyone knows it's a silly law so I don't think there will be any less pressure to have accounts because enough kids will be evading it. The ban will only motivate many kids (if you know much about how teenagers think)