Here he talks about the book in this interview uploaded 7 years ago and he complains about Obama and Hillary, although he says he doesn't want to talk about politics, but he simply can't hold back. Thus, I doubt he didn't like trump.Can't imagine an active RvF member from back then voting for Evan McMullin.
If he was a forum member he's probably one of the guys that had a meltdown and left during the 2016 election.
In addition, even if pick up artistry was focused on sexual indulgence, the red pill movement was still generally filled with people who knew something was broken with the system. Active soy male feminists weren't really on these boards. I've said it before, there's a reason why governments did everything in their power to shut the whole thing down.