>Yes, but neither Apple (at least for non-MDMed devices) nor Google (for synchronized credentials) provide attestation, so any relying party enforcing attestation implicitly excludes the two largest implementations, making it a non-starter for most use cases.

The discussion was about passkeys as a standard, so "well right now Google and Ape happen not to use this part of it" doesn't really change that. It could change tomorrow for all we know and there'd be nothing to be done about it.

By the people on HN who stay away from passkeys, this is one of the most commonly named reasons.