on paper I’m not against it
Perhaps you should be, since there doesn't seem to be a non-dystopian way to do age checks on the internet at a large scale (as in, for more than e.g. sites dedicated for porn, and other very narrow examples). See Cory Doctorow write about Age Verification of any kind: https://pluralistic.net/2025/08/14/bellovin/ Or look at this EU wallet writeup: https://gitlab.opencode.de/bmi/eudi-wallet/wallet-development-documentation-public/-/work_items/13