What if, hypothetically, you lived a town where you could only buy a workout bench from one company and that bench turned out to be utter crap? I'd assume that you'd be pretty pissed.
It's the same with Madden and EA. EA has the exclusive rights to the NFL franchise names when used in a console game. If your big thing is playing the NFL teams in a game, and the game turned out to be shit, you'd be pretty upset.
Instead of just telling his friends, this guy is telling everyone. Both hurting EA's pocket book, and saving people, like soxmuscle, money.