They have a dream team that does the challenges before the survivors do it.Make sure it works, all that.
I don't know that it matters if they "cheated" when they had someone who was not a contestant but a paid employee who has the job of doing the challenges when the survivors are in camp and can't see it.
They usually don't show a complete failure as a demo for anything, ever.
Even if they did the demo for us back home in a cheating way, certainly the Survivors playing the game for real missed some shots so if they did rig it, they UN-rigged it.
It was not rigged and the dreamteam shot with 6 balls is six balls filmed over each other to make it look as if they are all at the same time. Very easy when the backdrop doesn't change, even easier in this day and age of digital cameras.And just for the sake of spreading information. The way they would have done it in the early days of film is to start them all in the "done position" then quickly push them out of their holes, reverse the film direction, making it seem as if all have been made easily and in quick succession.
My thought is no one is talking about it because the shots of it came from the dreamteam. Who cares if the dreamteam challenge is rigged.