I was going to write a long post about professional experience and close-to-the-source observations but I decided to delete. I have even been involved with, and continue to monitor, a "case" that Paulides has commented on.
Basically, what @
Lester Polfus said. Dude is a quack with about as much credibility as the high school drop-out selling essential oils on Facebook.
There are a lot of reasons people disappear in the wilderness but diving into those reasons and the contexts of those situations doesn't dramatize, or sell, well.