I worked for them a couple of years ago. I can confidently say that as of 2 years ago, the only thing images of your face would've been used for is verifying if it's an actual human face (e.g. not a photo, mask, etc.) and performing a facial match with the photo on your document. Also, at least 2 years ago every identification flow had a human review, to weed out false positives and negatives. I'm fairly certain that these things have stayed the same, as the guys running it are a good bunch of people, and don't have any ulterior motives for using AI besides moving the SLA from humans to AI.