Don't get me wrong, I'm all for privacy. But between setting up the birthdate when creating my children's local account on their computers, and having to send a copy of their ID to every platform under the sun, I'd easily chose the former.
I'd even agree to a simple protocol (HTTP X-Over-18 / X-Over-21 headers?) to that.
People keep saying this. Is it not within an operating system's purview to provide parents tools to configure what their kid can do with the system? Have parental controls been out-of-scope for all these OSes this whole time?
Whether it should be government-mandated is one question, but it seems more like this "it's the parent's job, not the OS's" has become a tagline that people just repeat rather than really thinking through it.
Is your expectation then that parents should sit over their kids' shoulder every moment that they access the internet? Are our tools not supposed to make that easier to handle?
At the very most, provide tools to help parents (e.g. on device filtering etc. or require companies to provide APIs to facilitate the same goal)
I thought that this is what you were getting at here, which is why I asked how this was an argument against values held locally on the device.