[jasonjayr]

Who gets to choose?

If it's the user, how do I as a user choose right now?

If it's the service implementing passkeys, why wouldn't they force a solution that's easier for them (less testing/less support/less maintenance, by forcing attestation to a specific list of providers), instead of letting users have an option?

Passkeys are an awesome solution to a difficult problem. But they are one bitflip away from eliminating user choice. Fix that problem, and I think folks here will jump on it in a hearbeat.

[stavros]

The user gets to choose. When enrolling an authenticator, you can choose what the authenticator is. I don't like Google's, so I use my phone and my Solo 2 as authenticators.