Many countries have digital IDs for years now.

It's not for digital IDs. It's for surveillance.

Digital IDs are fine (and desired even) if you are only requiring it for GOVERNMENT (same entity that released them) communication. Push for age control is scheme to make that info available for private companies and that's the trojan horse here.

> that info

That info being: {"over_18": true} or maybe {"over_16": true, "over_18": false} with a government signature.

Might be a problem if you've got a Vatican ID, I suppose? Though they don't participate in this system of course.