Ball, don't bawl over the ball

NBA players are in an uproar over the new synthetic ball being used by the NBA. What are they worried about, sloppier play? Worse shooting? If the officials were switching back and forth between the different models then I'd say the players had something to gripe about, but it's still round, it still bounces, and the fact of the matter is that half the players can't shoot no matter what ball is in play.