I think it depends on how you use the phone. For me, the starting point is the notification screen. So, with my touch id phones I would press the side-button to get to the notification screen, and then interact with notifications, but then you have to first unlock. With face id you can pick up the phone and directly interact with notifications.Seriously, I thought people prefer FaceID because people picked the phone which auto scans their face and unlocks. If you have to pick it up then swipe up, how is this better than a touchID? In both cases you are touching the screen. I do get though that it enables and all screen phone.
But if you starting point is the home screen, then it's less of an advantage. Apple could solve it by having an option to go directly to the home screen after unlocking, rather than the lock screen.