The second link article included the following:

Her daughter also had a rash that had caused scarring, and sunburn on her face and hands, Miles wrote. (Miles being the complaining parent.)

Okay, neither of the linked articles included any documented claim that the rash was caused by some negligently caused condition. Given only what was quoted, the kid might have had the same rash in any summer camp, or indeed, staying home for the summer.

Oh, but the kid got Sunburn!!! Oh, poor baby! Which of us never got sunburn in the summer, whether at summer camp, at home, visiting grandpa on the farm, or wherever?

As to the Lord of the Flies reference: First, Lord of the Flies is fiction, fer chrissake! And even then, the children in that story were completely without either supervision or protection. In this case there was a plethora of adult presence, part of them to make the film and part of them for safety's sake (pediatrician, animal safety expert, etc.). The kids couldn't avoid knowing that, and that knowledge, just of itself, will have moderated any wild impulse toward a sadistic dictatorial scenario like that in that fictional situation. And unlike in the novel, the kids knew this was an artificial, time-limited situation.

Yet more: The possibility of winning the $20,000 bonus would have to make for a moderating and uplifting motivation.

Dave Oesterreich