> Do it right, like the EU is doing

Doing it right like the EU? You mean like the EU, scan everything that is sent through anybody's phone in the name of protecting the children?

> the site you prove age to gets no information other than that you are old enough, and your government gets no information about what sites

That is the case for now. What happens when the lobbies get in there and decide that this info is actually very valuable and that they should have the right to know who is visiting their client's websites and apps, will the anonymity remain? I think not.

And what about the defense industry who in the name of fighting terrorism will demand that users that identify themselves on "suspicious" sites now need to have their data recorded?

The issue is that once everyone is using this system, then it's very easy for any government to come and start expanding the scope of the data recorded and as always under the cover of good intentions.

This is how it goes: - In 2025, they record nothing - In 2026, they start logging IP addresses and passing along suspicious log ins to the cops - In 2030 they start recording more and more data until all anonymity is gone

I wouldn't touch the EU's identity wallet with a 10 foot pole and I certainly wouldn't use anything that the EU is doing now as a benchmark considering what happened with the Chat control law recently.

Logging IP addresses for use by law enforcement started in like 2004.

I remember ISPs and Web cafés complaining quite a lot.

But I guess you mean on the client software side itself ?