> My point is just that, insofar as this is true, it means what the article is saying is more about cults in general and less about anything specific to rationalism.

The lesson I took from it was how tiny cults can appear inside of a larger group which itself is not a cult. Not specific to rationalism, I agree.

There are a few thousand rationalists, and the sizes of the cults mentioned in the article were about 20, 5, 5, I think.