The kinds of things you want here, and that I think we all do, are hard.

Yes, ideally a trusted intermediary would do something like… read your digital ID (which stiLL doesn’t guarantee it’s you providing it, up to a point), examine a birthdate, and sign an attestation to a liquor store that “this user is 21 or older” without you ever having to fork over your name, address, or biometric details.

The will to enforce such measures, at least in the US, seems low.