It's a solved problem with a slightly flawed implementation on the end devices.

You seem to be arguing that introducing the whole new class of legal frameworks, technical requirements and privacy scandals(1)(2) is somewhat better than fixing the end user software flaws.

(1) https://www.msn.com/en-us/money/other/1-billion-identity-rec... (2) https://proton.me/blog/discord-age-verfication-breach