Yeah, in my opinion Slatestarcodex also said something like that, that the idea of Rationalism lead to transphobia. (others read that part as being more anti-transphobia, or with a more positive slant re Rationalism/Scott).
Not a huge surprise if you fetishise math and numbers, and miss the point of seeing like a state.
But even that was optional right, it was just the cultural standard, nobody forced them to do it.
It gets even odder in a way, iirc the more destructive megolomaniacs (or cult leaders or whatever) who couldn't really accept that they are not allowed to use up massive amounts of resources/lives of other people were kindly suggested to play out these fantasies in VR, which I assume works on standard science fiction logic that it can be sped up, so those 400 years can stretch a long time in the computonium. (So the culture includes the LW virtual lives fantasy).
(I'm also pretty sure Yud is wrong about the Culture, iirc living by your strength certainly is a thing, it just has a fallback where you don't die if you fail via the robots etc of the Culture (And I think even that could be turned off in most cases)).
Anyway the article linked, and the conversation with the straw SF fan (who is heated while he stays calm) says more about Yud than the Culture.