> I think this is a sensible compromise. It gives parents more control than before without relying on shady third-party software or without turning every platform into a cop.

It doesn't give parents any control whatsoever. It just forces the OS to tell every website your child goes to how old they are. It doesn't require those websites to hide certain content for certain age groups. It doesn't define what types of content are appropriate for which age groups, it just makes sure that every advertiser bidding on your child's eyes knows what age range they fall into to.

If anything this takes control away from parents because even the cases where a website does their best to restrict content based on which age the OS tells them your kid is, it's the website setting the rules and not the parents. You might think that your 16 year old can read an article about STDs, but if the website your kid visits doesn't think so you as the parent don't get any choice.

With 3rd party software parents are controlling what software is used, they have the ability to decide which kinds of content are appropriate for their children and can be allowed and which types of content should be blocked. They can black/whitelist as they see fit. All of the power is in the parent's hands. This law gives parents one choice only: "Do I honestly tell my OS how old my child is". That's the end of the parent's involvement and the end of their power.