Yes, there is a camera crew there, and it seems recently they are pushing them to take more risks.
However, Les Stroud on Survivorman is alone and must do all his own camera work. The same with this English guy Ed Stafford, but he's alone, naked and without any equipment other than a camera for 10 days.
Then there's Naked and Afraid where they have a camera crew, but can only help them in an emergency.
Then of course there's Bear Gryllis who is totally fake and spotted staying in a hotel during one of his "adventures".