Absolutely trivial and totally comprehensive solution, enabling adult content blocking at the account level, device level, network level, and the ISP level. Could even be expanded to any sort of content blocking, if you want to allow households to restrict access to vaccine critique or criticism of the king without violating the First Amendment or rooting everyone's devices.

The problem is that the point is to root everyone's devices. Anyone explaining how easy this is would be pushed out of the conversation as fast as if they were advocating for single-payer healthcare.

edit: I've been advocating the nearly identical but opposite solution - restricted access sites shouldn't respond to requests that lack an appropriate age/content restriction header. If they do, jail them.

They're literally going to have to do this anyway. Rooting people's devices to force them to lie about their age when they install their operating system is an absolutely fake pretendy solution; the only way it works is if you have to verify your age with some government agency when you install an operating system, in order to make that OS age official. The point is the identification.

No. That requires information disclosure to a third party. The point is enabling device admins better control over local device behavior. We're trying to keep conscientious parents able to do their thing. Not further enable the ability to manage the populace with official registries. If a kid can figure out how to install their own OS without their parent's help, odds are the kid is with it enough to start dipping their toes in the deep end. Or at least until they out themselves in front of their parents. In that case though it's a home problem, not a rest of the Internet problem.

It's still a stupid unconstitutional law, but I see what the aim is, even without strawmanning it.