You might have interest in the below articles. It'll clear up a lot. His grandmother shut him down, told him it would be an abomination if he followed his true inclination. His best friend at Yale was a lesbian and talks about his 360 degree change in views.

https://www.advocate.com/election/jd-vance-gay-name-change

https://www.nytimes.com/2024/07/27/us/politics/jd-vance-friend-transgender.html