Basically segyges feels like controlled opposition, just not by EAs, perhaps other people who don’t mind that he never brings up the pervasive eugenics angle? He certainly posts (including in LessWrong) like it’s his day job.

Maybe, but I'm also willing to buy that Gyges (and the other tech-employed wannabe-calm AI centrists populating Bluesky) genuinely believes in the broad concept of "AI" as the necessary next stage of techno-progressivism. He and his fellow travelers are just positioning themselves as the sane, sober, starched-shirt Presbyterian sort of believer, as opposed to the tongue-speaking, snake-handling Pentacostals that are the hardcore rationalists.

It's important to understand that the eugenics aspects are never going to be a particularly high concern for people like Gyges. They've comfortably made it past the selection filters in education and employment that are relics of the eugenics movement, so they think IQ-supremacy and neo-phrenology can't hurt them anymore. It's when this attitude curdles into fear that someone might revoke the status conferred by passage through such selection filters that you get a DHH, Shuttleworth, etc. I think that's a prominent root cause as to why I, and many of us here, can't trust a Gyges type. They may differ with the fascists right now, but they also have no innate defense against ethical freefall.