Earlier quoted context omitted.
True, but that's not different from fingerprints. Fingerprints have collisions. That doesn't mean that it isn't a highly effective tool.
Yes, the analogy is valid. Hence why fingerprints are "good"/"very good" at making sure the person presenting the fingerprint is who they claim they are, but for other purposes, not so much. But they be better than face recognition at "search at a DB" tasks (especially if you have multiple fingers)
So the question is: how good at this is a facial recognition system compared to a human being?