It's a shame because I think there a lot of valid, thoughtful critiques one could level at the Rat/EA community; but this was not that.

They got to him before he could finish.

They did. The entire section starting with "Of course, despite the emphasis on reason — and the subtle implication that the out-group is more wrong — the rationalist community is susceptible to the same biases as anyone else" talks about the failure of the rationalist community to be any better than any other group.

Then this describes the actual break:

> By that time, my relationship with the skeptic community was already strained; in an earlier message to the same mailing list, I said that for all the claims of being enlightened, it’s the only place where stonings are still in fashion. Even so, when I saw the Damore email, I had a brief urge to respond. I wanted to accuse him of “motivated reasoning” — a purported fallacy of constructing an argument to advance a specific conclusion, in contrast to the divine, unmotivated reasoning of real rationalists. I bit my tongue, thought to myself “wow, what a stupid game to play”, and deleted the draft.

In other words, they had been dissatisfied with the whole rationalist way of arguing for a while; and this was the point where they finally felt like "This is actually just a game of words; and it's a dumb one I don't want to play any more." The implication being that after this they no longer considered themselves a rationalist, nor engaged in its form of arguing.

ETA: FWIW, I mean... hard things are hard? It's the normal state of the world that people think they've done the hard thing but are actually just finding excuses to do what they want. People like J.D. Vance decide to be a Catholic, but turns out Jesus' actual teachings are so counter-intuitive that he still doesn't understand them and does them badly. Actually being rational is a difficult, mostly solo activity.

Quitting rationalism (or Christianity, or ...) because most of the people around you are just cosplaying is like quitting chess because most of the people around you are just playing around and never get past 1200 ELO. Or like quitting weightlifting because most people around you talk about reps and whatever but never actually push themselves enough to get past their current plateau. Like, OK, that's their problem, but what's that got to do with you?

I often have this experience with blog posts on HN. They do all the background, and once they get to the juicy bit, it ends.

Yeah, that felt abrupt.

Leave the audience wanting more, I guess?

It comes across to me that there's a lot of culture warring in it that's irrelevant to the task of actually figuring out what's true. Bringing up Damore and "sealioning" within a few paragraphs is more than enough to establish for me that this is not about trying to have any kind of constructive discussion.

Aside from that, it's curious how I've been interested in these ideas (and following SSC) for like a decade and this is the first I've heard of the castle. But I do hear about the Against Malaria Foundation constantly from that direction, and I'm pretty sure they've received more than 15 million from self-styled "aspiring rationalists" and "effective altruists" (although these really aren't meant as identity labels and you're doing it wrong if you think of yourself that way; pg's "Keep your identity small" represents solid rationalist thinking).

Yes. It's almost as if the author felt that long, long, long chains of explanations might be somehow undesirable.