+Sure, _if we were in the position of designing a constructed language from scratch_ under current social conditions in which a person's "gender" is a contested social construct, rather than their sex an objective and undisputed fact, then yeah: in that situation _which we are not in_, you definitely wouldn't want to pack sex or gender into pronouns. But it's a disingenuous derailing tactic to grandstand about how people need to alter the semantics of their _already existing_ native language so that we can discuss the real issues under an allegedly superior pronoun convention when, _by your own admission_, you have _no intention whatsoever of discussing the real issues!_
+
+(Lest the "by your own admission" clause seem too accusatory, I should note that given constant behavior, admitting it is _much_ better than not-admitting it; so, huge thanks to Yudkowsky for the transparency on this point!)
+
+Again, a comparison to the _tú_/_usted_ distinction is instructive. It's one thing to advocate for collapsing the distinction and just settling on one second-person singular pronoun for the Spanish language. That's principled.
+
+It's quite another thing altogether to _simultaneously_ try to prevent a speaker from using _tú_ to indicate disrespect towards a social superior (on the stated rationale that the _tú_/_usted_ distinction is dumb and shouldn't exist), while _also_ refusing to entertain or address the speaker's arguments explaining _why_ they think their interlocutor is unworthy of the deference that would be implied by _usted_ (because such arguments are "unspeakable" for political reasons). That's just psychologically abusive.
+
+If Yudkowsky _actually_ possessed (and felt motivated to use) the "ability to independently invent everything important that would be on the other side of the filter and check it [himself] before speaking", it would be _obvious_ to him that "Gendered Pronouns For Everyone and Asking To Leave The System Is Lying" isn't the hill anyone would care about dying on if it weren't a Schelling point. A lot of TERF-adjacent folk would be _overjoyed_ to concede the (boring, insubstantial) matter of pronouns as a trivial courtesy if it meant getting to _actually_ address their real concerns of "Biological Sex Actually Exists", and ["Biological Sex Cannot Be Changed With Existing or Foreseeable Technology"](https://www.lesswrong.com/posts/QZs4vkC7cbyjL9XA9/changing-emotions) and "Biological Sex Is Sometimes More Relevant Than Self-Declared Gender Identity." The reason so many of them are inclined to stand their ground and not even offer the trivial courtesy is because they suspect that the matter of pronouns is being used as a rhetorical wedge and typographical attack to try to prevent people from talking or thinking about sex.
+
+And this suspicion seems broadly accurate! _After_ having been challenged on it, Yudkowsky can try to spin his November 2018 Twitter comments as having been a non-partisan matter of language design ("Trying to pack all of that into the pronouns [...] is the wrong place to pack it"), but when you read the text that was actually published at the time, parts of it are hard to read as anything other than an attempt to intimidate and delegitimize people who want to use language to reason about sex rather than gender identity. [For example](https://twitter.com/ESYudkowsky/status/1067490362225156096):
+
+> The more technology advances, the further we can move people towards where they say they want to be in sexspace. Having said this we've said all the facts. Who competes in sports segregated around an Aristotelian binary is a policy question (that I personally find very humorous).
+
+Sure, _in the limit of arbitrarily advanced technology_, everyone could be exactly where they wanted to be in sexpsace. Having said this, we have _not_ said all the facts relevant to decisionmaking in our world, where _we do not have arbitrarily advanced technology_. As Yudkowsky [acknowledges in the previous Tweet](https://twitter.com/ESYudkowsky/status/1067488844122021888), "Hormone therapy changes some things and leaves others constant." The existence of HRT does not take us into the Glorious Transhumanist Future where everyone is the sex they say they are.
+
+Rather, previously sexspace had two main clusters (normal females and males) plus an assortment of tiny clusters corresponding to various [disorders of sex development](https://en.wikipedia.org/wiki/Disorders_of_sex_development), and now it has two additional tiny clusters: females-on-masculinizing-HRT and males-on-feminizing-HRT. Certainly, there are situations where you would want to use "gender" categories that use the grouping {females, males-on-feminizing-HRT} and {males, females-on-masculinizing-HRT}.
+
+But the _reason_ for having sex-segregated sports leagues is because the sport-relevant multivariate trait distributions of female bodies and male bodies are quite different.
+
+[TODO: (clean up and consolidate the case here after reading the TW-in-sports articles)
+
+The "multivariate" part is important, because
+
+Different traits have different relevance to different sports; the fact that it's apples-to-oranges is _why_ women do better in ultraswimming—that competition is sampling a corner of sportspace where body fat is an advantage
+
+It's not that females and males are exactly the same except males are 10% stronger on average
+
+It really is an apples-to-oranges comparison, rather than "two populations of apples with different mean weight"
+
+https://www.lesswrong.com/posts/cu7YY7WdgJBs3DpmJ/the-univariate-fallacy
+https://www.lesswrong.com/posts/vhp2sW6iBhNJwqcwP/blood-is-thicker-than-water
+
+If you just had one integrated league, females wouldn't be competitive (in almost all sports, with some exceptions [like ultra-distance swimming](https://www.swimmingworldmagazine.com/news/why-women-have-beaten-men-in-marathon-swimming/)).
+
+]