She didn't just piss off the Boss - more like "everyone in the stadium". That wasn't the problem. The problem was her acting like a jerk and generally being a mean drunk to everyone. If you wouldn't allow some random loser off the street to disrupt the event of your choice, then she shouldn't get a free pass. My personal interest in pop music ended at about 1985. Which is another reason I can't appreciate her work, because my view of life is sufficiently black-and-white that I don't want roles to be played with or undermined.