Is it not stupid that someone's sins should stain every single unrelated thing they've ever done? What kind of moral fascism is it where the person must be good

Is it not stupid that someone's sins should stain every single unrelated thing they've ever done? What kind of moral fascism is it where the person must be good and holy in order to not invalidate every single thing someone has made? Same thing could be said about ReiserFS... a technical achievement completely disregarded because the creator murdered his wife. The idea that a creation or an idea is tainted by its creators sins has no basis in physical reality and exists solely in the minds of humans.