It does appear in the article.

> The group is a radical offshoot of the Rationalism movement, focusing on matters such as veganism and artificial intelligence destroying humanity.

You yourself seem to acknowledge this as a fact.

Can you tell us more about how they were kicked out? Are there other groups that have been kicked out?

I mean, they seemed kind of visibly crazy, often saying threatening things to others, talking about doing crazy experiments with their sleep, often insinuating violence. They were pretty solidly banned from the community after their crazy "CFAR Alumni Reunion" protest stunt, and before then were already very far into the fringes.