In theory I agree. In practice I have severe misgivings about directly incorporating government issued IDs into mundane online transactions.

I don't want "papers please" to be normalized. If the smart ID can do anonymous attestation of age then it can presumably also share various details with a requesting party. Next thing you know Facespace 365 is requiring you to provide your (attested) full legal name in order to register an account. I find that to be a highly objectionable outcome.

If things escalated beyond basic age checks that also adds hardware requirements. Would I find myself needing a smartcard reader to do anything online? The friction of needing to visit a bank in person seems like a feature to me.

What doesn't bother me is age restricted content guarded by a low fence. The bare minimum required to blunt the impact of something that appears to be analogous to an epidemic.