This is the same argument people make about age of consent.
The law is the law. Yes, it's a little arbitrary and has some small errors, just like voting age, drinking age, ect.
But at a certain point the law says an adult is an adult.
You can't just make the claim that all behavior isn't accountable just because legally we needed to draw an imperfect arbitrary line. That's throwing the entire baby out with the bath water.
Look, the law is the law, I agree. If you are an adult by the law, you face full consequences of your behaviour.
Wasnt the issue. Issue is, you find out that your worker was in a gang for example. Now, there is a huge difference, if he was in a gang last summer, or he was there a decade ago right? And if you know, he ceased any criminal activity 10 years ago, you would probably leave him at his job.
Otherwise, you have a situation, where if you have done anything wrong in the past, it doesn't matter if you corrected your behaviour, you are still tainted. In this case, why should one correct the wrong behaviour at all?