alt Hacker News> Michael Seibel and Dalton Caldwell were publicly anti-Trump
Neither of these were "publicly anti-Trump" as much as Garry Tan has been.
Actually, where'd you even get that from? I cannot with my life imagine that Dalton would publicly post about politics. I've googled around a bit and found nothing either.
Michael specifically mentions in an older video with Dalton brainstorming things they could do about Trump. I don't recall ever seeing a YC video where Garry leaks any political affiliations, though I don't follow him on social media.