Getting the temp and humidity right, and understanding that they aren't the type of snakes that so easily deal with as much handling as coastals etc is the biggest part of the problem with the excited newbies, who of course love to handle their new pet.
Those might sound like pretty simple things, and I guess, in some ways they are. But they stress out pretty easily and they are not as forgiving to people who get any of these "simple" things wrong.
They're not a beginner snake, and "she'll be right" wont cut it with these snakes.
A little bit of practice with carpets or jungles etc, getting used to the idea of being vigilant on humidity and temps would save a lot of would be new GTP keepers a lot of money and heartache
My 2c, for what its worth (and new excited kids with money to burn are going to do whatever they want, its not like they listen to advice anyway hehehe) is - don't underestimate keeping GTP's. They're not impossible, but they're not for first timers.