I don’t think it is a fair comparison.
When TouchID was introduced, it was an additional feature. You could choose to stick with passcode if you wanted.
With FaceID you are having a well known and familiar feature *removed* and replaced with a new one that people are unfamiliar with. They can’t opt to stick with TouchID.
Not only that, they are removing functionality from the phone. My wife and I use each other’s phone from time-to-time. We have our fingers registered in each phone. Multiple registered faces is not allowed on the new phone. I guess this will be a “new feature” in the future.