Quote Originally Posted by Zumi View Post
That is because thunderstruck has a random element to who it picks, some people are bad at reacting to randomness they don't expect to be picked with it because its random weather or not they get picked and most of the time they don't get picked.
It's still a scripted element that happens at a specific point in the boss' rotation. You know exactly when Thunderstruck is going to be going out and should be keeping an eye out for the debuff-- literally the only thing you need to do is glance up to your debuff bar, see if it's there, and then react accordingly. The fact that people can't even do that much doesn't bode well for truly random mechanics.