....
The problem is that such sick people specifically shout to everyone that they cut off their dick. If they led a quiet life, then no one would know about this and the child's psyche would not be traumatized.
But if they led a quiet life they couldn't play the victim card. They'd get fired because they were incompetent, they'd lose friends because they are jerks, and they'd get treated like the person they really were.
Playing the victim card lets them be total jerks and incompetent and get by. Or so they try.