Pretty sure they said the same thing about the Nazis before they rose to power. They won't unite willingly but they are also predisposed to subjugate themselves to a perceived higher authority and fall in line so long as they get to punch down the hierarchy at someone else.

Sure, their ideology at its core will always cannibalize itself by the functional need of an out-crowd for which to oppress. They simply believe the system will never turn on them because they are naive and stupid, believing themselves to be "one of the good ones" that the system will protect instead of harm. They naively believe that those who get harmed "deserve" it due to faults of the individual's character and will never understand that the system doesn't give a single shit about the individual character of the people who become victimized by it.