Working for millions doesn't imply a good hit rate. Google could release a feature that worked 1% of the time and manage that, as well as barely noticing if it wipes out 10% of their users. My actual experience is that almost all the people I know who are using passkeys are using them by mistake and it's only not a big problem because they aren't currently being used up to their promise of preventing the vulnerable authentication methods.

My actual experience is people with passkey are fine. No more account take over. Mote over they like frictionless login.

Yes there are few that used bitwarden and lost everything as their sync using syncthing failed.