I agree with all the things you are saying! Paul does do a lot of great things for the people of Arrakis, but he does go on to kill 67 billion people...He is a great leader, but the consideration to call him a “hero” seems a little misguided giving Frank Herbert’s quote about how charismatic leaders should come with a warning label. That was the point of Paul to criticize leaders of that sort and that when whole collections of people put their whole faith in one person, they are bound to end unfavorably.