I have an iPad Pro with FaceID and the smart folio keyboard and that is a close analogy to the laptop with FaceID.
With FaceID I don’t have to “do” anything to unlock it. When I sit down in front of the iPad, it is just unlocked. I don’t have to think or act to make it happen.
With the laptop with touchID, I need to press a key to wake it and then press the right finger on the touchID key to unlock. It is a more deliberate and complex action.
I can see on phones that the differences are less, but even in the time of masks, I tend to prefer FaceID. If I’m using my phone, I’m also looking at it. The mask gets in the way but that is only a few times a day when I’m at the grocer or something like that. I know that with touchID I could pull my phone out of my pocket and unlock with my finger in one movement, but that doesn’t save much for me. You may use your phone differently that that’s fine. I think there would be value in a phone with both systems as people have different needs and preferences.