Yes, this section hasn't previously been reported or commented on. I wonder if this is essentially an opt-in to add your face to the FaceID master dataset[0], or if it is to just allow the developers to see what issues users are having (and how frequently).

[0] - It's previously been reported (https://techcrunch.com/2017/09/15/interview-apples-craig-fed...) that Apple collected this dataset at great expense. The ATP podcast has an account of someone who took part of that data collection here: https://overcast.fm/+CdQoBnmk/1:15:23