My parents care a lot about making life better for me, and making life worse for everyone else.

That's a tricky one. I've found that even children who have been abused and mistreated still want their parents around. Whether or not they do when they're older is a different story but it's one of those instinctual relationships thats one of the most difficult ones to let go of. Idk about everyone else but I wouldn't expect anyone to cut ties off with their bigoted parents or close family members, as long as I was certain they challenged them and didn't enable it. It's not a matter of, oh you have this questionable person in your life, cut them out. It's more of a, what are you doing about it? You can't choose your family but you can choose how you show up.

Also, if I was ever dating someone like this I'd have firm boundaries. I would have no relationship with their parents. I can't take away a relationship with deep bonds but I don't have to tolerate shit either.