On his press tour, he had a lot of negative things to say about Trump. In conversation with Fresh Air's Terry Gross, he said:
"I can't stomach Trump. I think that he's noxious and is leading the white working class to a very dark place."
In public, Vance said that Trump was, "unfit for our nation's highest office."
And in unearthed private messages, he compared Trump to Adolf Hitler.
From 2016. Seems he did drastically change his opinions on trump once in politics.
I didn't label him a sexist. But that is a sexist act. Assuming a man because programming fundamentally is sexist.