And what are the consequences for application vendors that collect more information, including after the age is collected?

I must have missed that. Which of them prevent pervasive data collection on all ages?

If you want to avoid all pervasive surveillance, it might be wise to not mandate all pervasive surveillance in the OS by law.

In fact, I suspect adults, and not just children, would also appreciate it if the pervasive surveillance was simply banned, instead of trying to age gate it. Why should bad actors be allowed to prey on adults?

The way to go for this kind of thing is to not go for this kind of thing at all.

The interesting thing here is less about what people aspire to, and more about the lack of imagination and thought when considering the world they want to create.

It would be funny if the sleepwalkers weren't trying so hard to drag humanity along.