[int_19h]

It doesn't mean any of that? The point is that the parent, not the child, is the owner of the device. So the parent can restrict the device they own before handing it off to the child (or the same with accounts on the same device).

[trinix912]

That’s what we currently have with parental controls. If they wanted the OS to check for the parent legally being an adult, that would rule out custom OSes and browsers which couldn’t be trusted (by the government) to check for that.