To ostracise means literally to be outed from society.

Most people I know want to keep their kids off social media, but do not want them to be ostracised.

Given that law, it might now be possible to keep your kids off the networks.

In my experience, at least for younger teens, it’s a small subset of kids enabled by their parents that push everybody else into the mouth of the kraken.

Example from my life:

Kid A has an Instagram account curated by her mum, who is more than happy to set up all kinds of communities, etc., for the kids in the class to cite: “finally be able to better communicate and stay in touch”.

Sure, you can keep your kid out, but social isolation is not easy for teens. Given that law, you could get Insta-mom banned.