I was wondering about this too. You could also say it's a sturgeon's law question. They do note at the beginning of the article that many, if not most such gro

I was wondering about this too. You could also say it's a sturgeon's law question. They do note at the beginning of the article that many, if not most such groups have reasonably normal dynamics, for what it's worth. But I think there's a legitimate question of whether we ought to expect groups centered on rational thinking to be better able to escape group dynamics we associate with irrationality.