During the war chapter, the author says, no one would kill the citizens of occupied countries because of future tax revenues. So for the citizens its not a big difference if the rulers change. The naivety in this statement is so far beyond idiotic its staggering. Apparently rape and looting does not happen in this fantasy world.
During the same chapter, it says The army is under command of the general. There is no such thing like the king comes to the battle front. The king has to stay safe in the royal castle. I thought, seriously? Feudal era, the king absolutely has to be on the battlefield. They may not charge into battle, but they damn well have to be there.