Having worked down there i think its because they are ( far and away ) the biggest club in Yorkshire which also is the largest county in England. That and the fact they had one of the greatest sides in history under Revie ( who we beat btw ) and their Title win under Wilkinson.
They have that entitled thing that other successful clubs have ( and less successful ones have too eg the Mags )
Revie won 6 major trophies.
Klopp won 5 in less than half the time at Liverpool.
Talk about over egging the pudding.