You've seen the spectrum of powerful and impotent main characters and this one's greatest weakness is that the author assumes his charisma works on the audience.
He has terrible judgment. Everyone who relies on him has worse judgment. He kills more people who rely on him than people who explicitly desire to genocide those who trust him.
There are antagonists who by authorial fiat are better stronger faster etc., but in this story none of that is necessary. The protagonist is just ineffectual despite constantly ticking his skills upward.