But you're using apps with your fingers. You can literally tap your phone dozens times or more per minute when you're using it. That advantage just doesn't have any weight to it, it's just novelty. Not to mention, Touch ID isn't time based like Face ID, in which if you get prompted to authenticate and aren't ready and miss your time window it can get tricky to the point it will fail enough consecutive times ask you for your passcode. Touch ID is literally one tap like the thousands per day on your phone and doesn't force you to any time window. You use it when you're ready. You use it blindly, it will work. You bring up Apple Pay in a hot second as you simultaneously bring it to the POS and authenticate in the same gesture. Never have to bring it up to your face first while muttering "just a second...". You can be in bed with your face stuck in your pillow and it will still authenticate. Or half covered by your blanket or body. You can be talking around and not really looking straight at the phone the exact second it needs authentitaction. You don't have to be always conscious to make a face to the phone. Touch ID is more relaxing to use, and it's a big bonus when I'm using my iPad instead of iPhone.
You can all say "well, all of that doesn't really matter to me" and that's fine. But you can't say that Face ID is better than Touch ID in every way, because it's not true. Face ID is to all effects an alternative to Touch ID in devices that don't have a bezel to carry it. Hell we've had all-new Touch ID devices coming out in 2018 (MacBook Air) so even Apple don't seem to position Face ID as a total evolution to Touch ID but rather as a side step. Honestly, none of them are perfect, but since switching from Touch ID to Face ID I've had to input my passcode more often, to the point I switched my passcode to a simpler, faster to type one, at the expense of security. I've trained myself to pre-emptively be tapping on that part of the screen where the (repeated) digit is. That's not great or futuristic. Face ID is good enough at the moment in the sense I wouldn't want the bezels back just for Touch ID, but honestly I feel like Apple needs to continue working on biometric authentication because Face ID doesn't seem to be a good enough long term solution, at least just by itself. Things can certainly be better than this.