Have you considered that it’s not the content that annoys people the most, but the execution? Dragging a story can be bad and so can rushing it. Pacing is key.I think it's nice that they finally gave a name to Shin's strength.
Everybody complains how this war against Zhao drags on and everybody wants Houken to die as soon as possible, but when author decides to wrap everything up quickly, while unraveling the ridiculousness behind Houken, people are bothered by the amount of exposition. You just can't satisfy some people...