I’m sadly aware about Vance’s admiration of Yarvin and his toxic ideas. It follows that he’d be interested in that clown Yudkowsky and the rest of the LessWrong set – I wouldn’t be surprised to find that Vance read or even posted there.
Like you, I’m trying to get the word out about these associations, but the neoreactionary stuff is so esoteric and bizarre that it’s hard for most non-geeks to understand how alarming it is that a candidate for VP buys into it. I’ve started boiling it down to explaining that he agrees with eugenicist tech billionaires who think democracy should be replaced with human and AI CEO-monarchs, but even that sounds unbelievable.