Unfortunately I can't read the article (taken down), but I can read some of the underlying material shared by dang: https://news.ycombinator.com/item?id=49737985
I feel there's many interesting pieces to this -- Yudkowsky certainly has extreme views, it's clear there are a ton of poly and open people in this community, some people do have a religious veneration for Yudkowsky and "rationality" in general, and there's some smarmy folks in the mix. But I'm not sure any of that is a negative critique of the general movement. I suspect similar statements were true of the enlightenment, protestantism, and the beatniks? Marginalized views, free expression, and new ideas often go together in what I feel is an obvious pattern. I don't care if there's a bunch of sexually liberal people in this org, or some obsessive fan-devotion, so long as they're not forcing somebody into a situation they don't want. These people can live their lives however they want; I think that's quintessentially American in a way that's very positive and increasingly rare. And on the other side, there are many impacts from this movement that I'm quite happy with: I'm really happy that this movement has spawned/impacted GiveWell, the Long Now, Scott Alexander, Works in Progress, and Open Philanthropy, to name just a few. I'm also happy that it seems to have birthed the latest AI progress. Of course there are things that I find ridiculous (I didn't really like hpmor, their forum board is somewhat silly, and Roko's Basilisk[0] is just hilarious, lol).
If this piece was meant as documentation of a particular moment in time, then they've picked a really fascinating group to document! But it feels like it's really meant as criticism, that we should trust the whole group less because there are some sexually open fans of Yudkowsky. I'm not sure I can get on board with that. If sexually open fans of Yudkowsky want to build great things, I say let them!