I can't watch Man vs. Wild...that guy dispenses spectacularly bad survival information, urging people to do things that would get normal people killed. He deliberately puts himself in dangerous situations (falling down a crevasse, jumping through ice into a frigid lake, drinking suspect water, etc.) knowing that his athletic ability and large support crew will bail him out. He's all about shock value, and nothing meaningful is conveyed. Once the cameras are off, he's off to the lodge for a hot meal and a few drinks.
OTOH, once Les is on his own, he goes to great lengths to minimize danger. He's very much an "everyman" in the wild, and suggests survival techniques that are actually possible for normal folks that might unexpectedly find themselves in a bad situation. Sometimes he fails at them, and to his credit those failures make the final cut. At the end of an episode, he often looks totally beat to hell...just as most of us would!