> And honestly, nowadays, if tech companies are pushing really hard for something then that is an immediate red flag for me and it bears more scrutiny.
The reason is the ever increasing number of hijacks of social media presences and code hosting portals, with the latter being a serious financial threat. Done right, passkeys stay in the Secure Enclave, at least for anything Apple and most of the Android sphere. There is no reasonable way to obtain login credentials for accounts protected by passkeys without physical access to the user's device(s).