It's not about the implementation - it's about what passkeys do and don't do.

Passkeys prevent someone from stealing hashed passwords from the SERVER, but if the server is already compromised badly enough to let someone in, all of the data stored on that server is compromised already anyway. Companies want to use passkeys because there is less involved in implementing secure login credentials, but that is only ONE tiny part of overall end to end security, and I do not for a SECOND believe that they are going to keep on highly skilled, security-minded developers at real salaries when the C-suite says "We're using passkeys. We're secure. Fire the high priced developers and get me some interns who can use Claude."

TLDR: Passkeys are not a magic bullet and they aren't a game changer, and the false sense of security they push is dangerous.