I don’t think it’s a rigorous statement, but I don’t think the intended line of reasoning was “human beings cause cults, ergo all human begins cause cults.” The implied reasoning (in my mind anyway) was “If you look at selection pressures within groups (in general) and knowledge of human psychology, you will see that most humans, when grouped together around a cause, have a tendency towards cultishness, and that means that unless you’re specifically guarding against it, your group will probably become increasingly cultish over time.”
I don’t think it’s a rigorous statement, but I don’t think the intended line of reasoning was “human beings cause cults, ergo all human begins cause cults.” The implied reasoning (in my mind anyway) was “If you look at selection pressures within groups (in general) and knowledge of human psychology, you will see that most humans, when grouped together around a cause, have a tendency towards cultishness, and that means that unless you’re specifically guarding against it, your group will probably become increasingly cultish over time.”