I actually agree with most of what you're saying here. It's true that Bush hasn't been the type of elite back that engraves their name on the history of the game. He has the potential, but he's never realized it. However, he's still a good player for us, and contributes immensely to our offense.
It's not Reggie's fault that he was drafted where he was, or that he is paid top pick money. If he continues to be mediocre and then demands "elite" money when it's time for his next contract, then people may have a point. Until then, they're hating on him for something that isn't really his fault, and it's dumb.