So the same passkey is being used on multiple devices, rather than different devices (actually applications) having distinct passkeys.
Doesn't that defeat one of the centrals aims of passkeys? In what ways is your setup different than random passwords in bitwarden - what's the additional security?
Other than that they shouldn't have a big advantage for a more professional user with unique, long, and random passwords. For the common user it should be a great upgrade, giving all these advantages with better UX.
The password manager has become the device (and offers some assurance if the device is lost, as you can log into the manager on another device). I agree definitely isn't the original vision of passkeys (having a different passkey on every device, stored in separate password databases?), but it makes more sense for my cases.
Doesn't that defeat one of the centrals aims of passkeys? In what ways is your setup different than random passwords in bitwarden - what's the additional security?