Obvious path is obvious;
Ideas a being floated, bills are proposed and laws are being signed to force age verification on the OS level. Once you go the top-down permissioned route for safety the final stage is everyone ending up in a cage to account for all variables.
This is the reason i am working on TEPP, to provide parents permissionless tools to create permissioned environments for their children (or agents/bots).
Nostr keys at the OS level would be great, not just for this stuff, and TEPP would fit nicely; but it also means i just have to enter my keys/bunkerlink into the OS, and it can initialize with all my apps, settings and files right then and there.

https://www.tomshardware.com/software/operating-systems/california-introduces-age-verification-law