[palata]

I am not sure how that is relevant, rather than nitpicking.

In the EU, there is no concept of EU ID, each country is responsible for their own.

Still, there is a governing entity that is responsible for your ID and controls it. Unless a US state is not a "governing entity"? Though the head of a US state is called a "governor", right?

[ranger_danger]

I think the relevance is that there can be no requirement by the US federal government for states to support any particular technology, which makes age verification continue to be a state-specific unregulated free-for-all.

Even the REAL ID Act only mandated requirements for a license when used to enter government owned or regulated property, and states can still choose not to abide by it.

[palata]

Yes but that is irrelevant to the discussion here. It doesn't matter if the federal government runs the age verification or if each government does it. The point remains: that "governing entity" already knows your identity, so by running an age verification service they do not learn your identity.