The leader wants what he has and wants to keep it. Absolute power/control. Only people totally dedicated to their cause/themselves will be able to succeed. It's not a democracy. Totalitarianism. So far, he seems to get away with it by making himself look like the Savior, the good guy, I'm here to help. Only his most trusted know the real deal, and apparently he has some kind of control over his trusted as well. We haven't seen that. This guy likes to do things the easy way, but I bet that, if he needed to, he could drop the charade and do what he needs to to continue having it his way. This guy would put all previous real world dictators to shame. His only limitation is size of the group, and he's definitely controlling that, for now.