The comments in that thread are dumb as fuck and typical of leftists; there are so many other reasons Jews are drawn to rationalism besides the flattering IQ statistics, going back way before the HBD stuff was even popular. It's not hard to see how people with a 100+ year history of secularism would tend to center their worldview around an imagined better future instead of some other organizing principle, and that some of them would end up being singulitarian weirdos.

The Jewish community in the US is also suffocatingly liberal in a way that few other milieux are, so it's not surprising that misfit Jews would be the cutting edge among "contrarian conservative" types like Moldbug and PC culture critics like Scott.