The key thing to remember about JD Vance is that he doesn’t have any core beliefs beyond striving for power/place. He’s a classic chameleon kid, saying whatever he needs to fit in. It’s why he was able to shift so seamlessly from “Trump is America’s Hitler” to being his VP.
That’s because if you do focus groups with women who voted for Trump, many of them will cite this comment as one of the reasons they’re no particularly interested in a President Vance.