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Has Face ID really been that inaccurate for you?
Yes. I even turned off the setting that checks for attention to unlock.
The other thing I miss (and didn't realize consciously until it was gone) is that with TouchId I often unlocked my phone with my thumb as I picked it up, and it was ready to view by the time I was looking at it. With FaceId I have to look at it to unlock. That also means I always have to pick it up. I can't unlock and use it while it sits on my desk.