Never watched one episode of the show. Sounds like a really dumb twist for survival show; I mean, what's the point, if somehow I lost all my clothes in a survival situation, one of the first things I'd do is make myself some sort of clothing. Clothing is protection from the elements, not just to cover nakedness. But I suppose people's prurient interests want nakedness.
I felt the same, until I watched the show. It is actually pretty good and in my opinion worth watching.
The contestants don't have to stay naked. Most make some sort of protection from the elements. The show doesn't show anything that is illegal to show on regular TV.
Keith