It's not about handling losing, but when you see the same 2-4 people still in green armor and running the opposite direction in Huttball, or zerging it up in Alderaan when the Ops Lead tells them to stay at the turret, for the ninth or tenth warzone in a row, it becomes clear these "newbies" do not care to learn what they need to do to help their Faction. That's when it becomes annoying.