If, as I suppose, it makes heaps of $$$$ for the network and pays the naked people quite well, it makes stupidity a relative thing. (and the camera crews don't seem to interfere unless there IS an emergency)
Hanging by a tiny rope from an ice ledge in the Himalayas is another sort of stupidity as people "test themselves" to find their limits.... as is doing a backflip on a motorcycle or handling poisonous snakes or diving from 100' into 3 ft. of water.

Takes all kinds ... and if naked mountain climbing were made into a TV program, I've no doubt IT would make money.