You do have to explain why not though
Ok, for context, his parents aren't shitty, unlike Succession. The family is mostly chill. His sisters aren't mean and bitchy; his dad might be emotionally distant, but he still loves his kids, but his mother loves him more than anything, and he loves his siblings. Even if in the story I put it where they are corrupt or maybe working with one of the villains, the parents still love their kids and want their kids out of danger. Even Darth Vader loved Luke.
I never said his parents were shitty; the guy I was responding to assumed that.
But to answer your question, people have choices. Just because your parents are shitty people doesn't mean you are going to be a shitty person. Just because your parents are good and loving doesn't mean you won't grow up to become an asshole.
There are a bunch of liberals/Democrats whose parents were hardcore conservatives.
People have choices, and just because you have past trauma doesn't give you a free pass to do horrible shit.