Um. Wow. So apparently, Billie Joe Armstrong, of Green Day fame, was pretty pissed at the iHeartRadio festival, and you want to know why? Because their twenty-one-minute set was cut to--man oh man, burn-one minute in order to make room for other "more important" performers like Usher, who, DUH, is infinitely more talented and who has far more staying power than Green Day. Who, as Billie Joe eloquently pointed out, ...