Clickbait article with little substance IMO. Yes, it questions something we believe to be true I suppose based around the pigeonhole theory, but it's down to how may holes (datapoints) and how many pigeons (people).
Article changes topic into people unlocking each others iPhones as "evidence". As I'm sure you've seen in the field the issue with biometrics is that the more processing of datapoints the more processing power or time it would take to make a decision. Also user issues with false positives or negatives based around us being squishy humans with skin changes during the period of a day, so it's using a relatively low amount of datapoints on devices like that.
Forensics these are processed differently from what an AI would be doing. IMO AI should be seen as a powerful tool but only to assist with actions that are to be reviewed by a time served human in all cases.