For one, their analyses almost always amounted to post hoc justifications of the things they liked.
"Almost always" is carrying a lot of weight here. Rationalists are ideologically diverse [1] when it comes to things like monogamy vs polyamory, left vs right, pro-AI vs anti-AI, nature vs nurture, racism vs anti-racism. The distribution is different from the general population, but many people have changed their minds about various aspects of their life after discussions and debates with rationalists.
https://docs.google.com/forms/d/e/1FAIpQLSf5FqX6XBJlfOShMd3U...
What’s less known is that the memo was originally sent to the skeptics@google.com mailing list, which I was a member of. It was a personal belief masquerading as a rationalist inquiry that tried to pull everyone into an unwanted workplace argument.
One of Damore's mistakes was opting for a high-decoupling route on a politically charged topic instead of a low decoupling route. That tends to end badly and he learned this the hard way.
https://www.lesswrong.com/posts/7cAsBPGh98pGyrhz9/low-decoup...