I think Ms. Bhandari touched on this as well.
Because facial recognition operates surreptitiously and doesn't have associations with things like fingerprinting that historically come out of a criminal justice kind of context, there's a bit less social stigma attached to it in the minds of people, although there shouldn't be, because it's increasingly used in the same context as mug shots, etc.
The other part of that is what Ms. Bhandari was talking about before, which is that, because it happens remotely and with less direct interference with individuals, sometimes people are just not aware of how intrusive FRT is in comparison to other biometrics, where you have to physically grab peoples' fingers or scan their eyes in a way where they're leaning in to ensure a good iris scan. For those two reasons, facial recognition has been easier to get adopted.