This is face id or passcode locking....either one of these two would work....not just face id.
how this is useful......when it still can accept passcode.
someone would casually ask us to give the password or can look at the passcode that we type, sometimes, while unlocking the device.
sometimes, if we give unlocked phone to someone, then they would look/ask for the passcode if phone gets locked...and the same passcode can be used to unlock any app.
this is a useful feature..but not 100%...I may be wrong