FaceID is incredibly unreliable in my opinion, and it almost always takes more time that touchID did. Furthermore, "Reachability" (the feature where you slide the UI down for easy access with one hand) is much more difficult to access and dismiss with no home button. It's rare I don't accidentally invoke some UI action when trying to dismiss reachability mode (mistakes include: dialing additional numbers, super-linking on tinder, clicking on links in websites, etc.)
Apple seems to know this, the store workers I spoke with when I was purchasing the phone admitted it was difficult to use.
Is it rose colored glasses, or would old Apple never release products that the Apple Store workers have to tell you are "difficult to use"?