This is how we get reduced security. People will go back to no passcode instead. FaceID is solving a nonexistant problem.
People are going to be unlocking this thing with pictures within 24 hours.
Have you not been following the rumours? Do you honestly think that Apple will let a photo unlock the phone? It boggles my mind how people think that Apple hasn't thought of obvious simple things such as this. It's called 'advanced' facial recognition for a reason. Samsung this isn't.