The GP gets everything wrong. I dont know how many people think that when theres a power failure a roller coaster is just going to stop dead in its tracks. Although, its not helping that a few years ago Chiller: Robin lost power during the launch, didnt have enough speed, and stopped upside down in the zero-g.
The GP do have little knowledge of many things, its not just coasters they ignore. As a pilot, I hear so many times people thinking that if something on the airplane breaks its literally going to fall out of the sky. Yes, it can happen, but lots of things can be broken before that happens. In fact, airliners do take off with stuff broken, a lot of stuff actually, and its perfectly safe.