If you watch one of the 'Making of" clips of Bear Grylls stuff you'll see they have about 8 or more people around including a producer/director telling what shots he wants. It has to be a bit Over The Top so Joe Public will find it interesting... Most of the time is will be story boarded and the main aim will be to get the shots and get the dramatic shots from a cameras perspective!!
Okay, so serious response.
That is all very well, and it would take a brave executive producer to pitch an idea based on survival/bushcraft that wasn't set up with dramatic shots and in general filled with things to make you go 'Ooo', but its been done to death.
We now have rich vs poor porn telly (no, not that type of porn) where we get to see people on benefits, and at the other end of the spectrum, people riding round in flash cars spending money on things for the sake of it. We have generally mind-numbing soap operas that play out almost daily with the same storylines hashed out over and over. Talent shows that are deliberately cruel, cookery shows that are deliberately cruel... dancing shows... well you get the idea.
There is little or no original programmes put up on the telly and whereas in days gone by millions would look forward to being genuinely entertained, the vast majority of people are now on the internet clicking away and communal viewing is reduced to ten episodes of this year's big drama (GoT, Breaking Bad etc etc)
The BBC recently put a two hour long trip along a canal. No voice over, no drama, just a camera fixed to the front of a canal barge and off down the canal for two hours. The viewing figures doubled compared to other programmes usually in that slot. Its been nicknamed 'Slow TV', but what it shows is there is an appetite for a completely different type of telly.
Grab a group of bushcrafters, send them off into the woods and film the hardwork needed to survive with minimal kit. No commentary, no drama, just the sounds of the woods and the activities by the bushcrafters. Bet it would attract a large audience without a single bushcrafter drinking his own urine, jumping into pools of water or sleeping in a camel. Show the failures as much as the successes, the sweat pouring off someone trying to start a fire using friction and if possible, the trapping and butchering of a rabbit... real stuff that really happens when you're trying to survive / live off the land.