He is a plonker and his advice is utter cack.
I'd say he's done pretty well making a good business out of the talent's he's got- hardly a plonker. He said himself he'd like his son's to do better at school than he did so they don't have to eat creepy crawlies etc for a living.
Ok the show is staged and if you were out on your own in a survival situation you wouldn't free climb up cliffs, pole vault gorges or leap into rivers but are you telling me the advice he gives about what plants and animals you could eat is cack- given that he employs a local survival expert for each show.
Does he have the wrong background for you by any chance TJ?