I've met Edward Grylls (aka "Bear") many years ago at an after-dinner speech thing. While some folks lapped up his tales of derring-do, the majority thought his "me me me" bulls**t made him into a phoney.
I've not met Ray Mears, but would like to. His narratives on how the wild west was won were, in my opinion, even better than his survival programmes. He could be the next David Attenborough.