You can't use Passkeys on iOS without iCloud, and you can't get an Apple ID without a phone number, which frequently maps to real-world ID.
This means that soon your logins will be tied to your ID.
This means that soon your logins will be tied to your ID.
Or did Apple manage to helpfully extend this standard into something requiring iWhatever accounts?
The only sites I don’t are the ones which don’t support more than 1 key.
I haven’t come across any websites that restrict it to just iOS. I’m not even sure it would be easy (without fingerprinting), because the browser usually handles verification (and gives options for security key and iOS).