At no point have I argued that biometrics are equivalent to passwords. But to conclude that biometrics must be equivalent to usernames because of that fact would be a false dichotomy. Biometrics serve an auxiliary role in security as an optional, subservient supplement to passwords.
Yes. If you read about how biometrics are implemented on handsets, a user is required to enter their password every time that the device is rebooted. The password is also required at random intervals, once every few days or so. And if the biometric scanners log a handful of failed accesses, the handset is locked and a password is again required to enter.
