It started by realizing other users, the government, AI scrapers, and the internet have potential to be far too creepy and/or investigative to continue using any personal details, namely my name or date of birth. I definitely scrubbed my birth year from everything, haven’t quite replaced all my accounts using my m/d though since my name is far from unique. So I have a vaguely techy pun of a movie reference. Zero Cool was the young alias of the main character of Hackers (1995)



One of the proposed ideas in a Discord-based thread was to use OS-level age authentication to prevent you from having to provide IDs to a thousand other parties. One place, one time. So that’s one reason for an OS to need it, in a world hellbent on increasing age restrictions. I don’t know enough about that idea to argue it, though I’m certain it could be spoofed in 0.2 seconds after release.
It sounded like the EU solution is a dedicated, non-identifying birth date tag in their passports.
But what do I know. I assume all age restrictions can be circumvented, so I see no point in all this theater. And it’s theater because it never really seems to truly be about protecting children. At least, to me, I’d be more concerned about SFW manosphere bullshit than NSFW porn when it comes to protecting kids (yes, I’m well aware a great deal of porn is misogynistic, degrading, abusive, etc)