Your phone should not have any business whatsoever collecting, checking, or verifying the age of the person using it.

> And as a parent, I know that if child protection is opt-in, there’ll be a huge fight about it, because some other parents won’t activate it, which then makes the situation unfair for the kids. I’d much rather have it on by default so that all kids are treated the same.

If you cared about your children, you would be against this. Otherwise you're fighting against your children's future; their privacy, their sanity, their ability to participate in a functioning democracy.