They always have Marc Andreessen be their front man for discussions of politics because if they sent out Ben Horowitz people might ask "Who is that Horowitz?" and one answer to that is that he's the son of David Horowitz
https://en.wikipedia.org/wiki/David_Horowitz
who was a notorious right-wing figure who just passed away a few months ago. Back in the 1990's he would come to Cornell twice a year [1] and rail against the liberal universities with basically the same arguments that Andreessen makes today. I don't know what trajectory Marc has followed, but if his beliefs changed it wasn't just "life happened to him" but that his business partner happened to him. It means his ideas are less fresh than he wants you to think and more stale.
[1] I read his books, attended at least one of his talks, asked him a question