Pretty sure that's intentional. It's replacing something you know (a word) with something you have (a key stored on a device or some kind of account). It doesn

Pretty sure that's intentional. It's replacing something you know (a word) with something you have (a key stored on a device or some kind of account). It doesn't necessarily need to use biometrics or be bound to a specific device, so those aren't quite accurate. Thus, passkey.