Google asks your kid, and they can pick either way. You can tell them "Hey, this is a device I bought for you, using a cell phone service I pay for, so either reenroll in supervision or I'm taking my device back". A little harsh, but... then you still get roughly the same level of control as before.

Could you point me in a direction that I can research for this? It seems interesting.

I don't trust social media companies to self-regulate this kind of stuff at all.

> When your kid turns 13 (or maybe it was 14), Google decides they're an adult now and takes the reins away from you.

Google stops locking in to behavior that is a direct response to age-related government regulations and defaults to the choice of the registered user at exactly the age the regulatiom ceases to apply?

Weird.