That’s not how they’re used. And there’s enough cases where it went wrong.
Yes and it has nothing to do with two people having the same fingerprint. We need to be much more precise on how we measure differences and what samples we allow (like no partials) but there isn’t an inherent fault in fingerprint evidence because there are multiples of the same one floating around.
I’m arguing against the notion that it’s individuals can have the same exact fingerprint and not talking about how we process them.