-He was an obnoxious warchief that was hated by basically every other faction leader in the Horde and Alliance going as far as using language like "Bitch" to describe the Forsaken leader.
-He had a strong dislike for other races in the Horde and with a rise in nationalism the "true Horde" and later Iron Horde was formed
-He had secret ties to the Old Gods which helped him rise to power
-He had spies sabotage Vol'jin
-He was only relevant for inheriting his daddy's reputation
-He loves building shit
-He was not chosen by the people but electoral thrall