More than this. He says that people should stay in violent marriages rather than get divorced:
JD Vance Suggests People in ‘Violent’ Marriages Shouldn’t Get Divorced
This is one of the great tricks that I think the sexual revolution pulled on the American populace, which is the idea that like, ‘well, OK, these marriages were fundamentally, you know, they were maybe even violent, but certainly they were unhappy. And so getting rid of them and making it easier for people to shift spouses like they change their underwear, that’s going to make people happier in the long term
JD Vance has also compared Trump to Hitler and publicly called Trump a reprehensible idiot.