Boyfriends dad makes sexist comments

Hey guys , so my bfs dad makes sexist jokes and comments towards woman when I’m over . My bf has tried to talk to his dad to not make these comments but he doesn’t listen. My bf has also told me not to say anything to his dad because he won’t listen as he is extremely stubborn and doesn’t think he does anything wrong and his scared he might yell at me .Personally I’m the type of person who likes to speak up when I don’t feel something is right that’s just how my personality is however I don’t want his dad or family to dislike me or my bf to get mad. So idk if should just grit my teeth and let him make the jokes or tell his dad that those jokes aren’t appropriate?