Yes, it's a very difficult question. I don't have a straight answer, but I'm slightly cautious about comparing face recognition technologies against a perfectly accurate and bias-free system, because that's not an option that's on the table.
We certainly know what we get from the kinds of decision systems that have been in use for decades. Current systems involve errors and involve bias, and we don't consent to being captured on CCTV in my country or by the eyes of other people. I think it's a complicated matter.