How do you know you are dealing with a cult zealot? They don’t recognize where there should be a limit. For them, there is no act too extreme, no bar too high, or any concept of going too far. In their pursuit of the latest white whale, they acknowledge only that they could go further and that no action they make is far enough and no revolt too extreme. Extremist, rather, is how they define anything not pointed at the direction they are heading.
They are so convinced of their moral rectitude as a reflection of what is right that they cannot recognize they have become that which they hated.
Oh I agree!