Okay so let's say the way people get hacked is a horrible mess and down to their own faults.
Whose fault is it that the systems in place, support tickets, emailing CS, using the GW2 website etc, to have your account restored is non-functional and completely broken.
I guess it's the players fault because if I ever make a car with failing brakes, I can just say: "never drive the car then?" or "never go fast enough to brake". I'm sure that would go over splendidly.