Of course you would want to adopt a laser focus on the individual from a policy perspective.

Otherwise you create a purely collectivist and tyrannical society where individual actions are irrelevant. Doesn't matter if you rob a bank or not, you are Amish, and are therefore not known for robbing banks.

Similarly, if you didn't rob a bank, or weren't even on the scene, but you're a former bank robber, you must be guilty of robbing the bank.

You're appealing to the literal "prosecutor's fallacy".