Is "because it is cold" better for you?
Brandon can run all the off field stuff. Decide how many bouncy houses should be in the field house on game day, determine where the merchandise trailers should be placed in the parking lot, maybe control some budgetary issues. However, as it is, he makes decisions that affect everything that happens on the field. He was the acting GM last year, he has been making these decisions for longer than people know, and he will continue to make them... despite the dog and pony shuffling of the chairs that occurred last week.
This organization has been progressively getting worse in correlation with Brandon's influence and promotions.
and to take it a step further, we have Overdorf and Littman who also make decisions that negatively affect a head coach who's objective is winning.