Revocation would still be possible, I guess. At least it should be possible to build a revocation flow on top of blockchain.

I am not so sure this kind of authentication will really catch on - the UX of Metamask and other wallets is just atrocious for say my father.

BUT I do happen to like to connect to a site just with my ETH wallet, it is much nicer than using username/password or handing over ALL your data to Google for the OAuth convenience. It's a bit sad that the web is no longer a place for people with basic tech literacy, I'd love to use my Ledger Nano everywhere.

I also was really fond of Civic for KYC and stuff, but it's gotten awfully silent.

Regardless of the pros and cons of various schemes, it's a strange omission.

For what it's worth I think the whole effort is wrong-headed except in some pretty niche areas of credentialing, somewhat for reasons you allude to; but it's weird context to ignore.

They most certainly do not lol, not without some serious plastic surgery. If they wanted to avoid the plastic surgery route they'd have to update the details by proving them to a central authority who can verify the update.