Yes. Sam Bankman Fried was/is an EA/rationalist (on the short list of biggest fraudsters in American history). So are the Zizian's (a murder cult). etc. etc.
Perhaps the author of the article is a rationalist, too. He certainly knows too much about them, cares too much, and the fact that he criticizes them only shows that there is some infighting among them.
Well it's a good thing I only mentioned the two groups who were explicitly socialists!
Death cults are weird like that.