The types that he regards as unworthy of his "group" are some of the types that I tend not to engage or trust in normal times...Why would anyone look to them in an emergency?

This seems to be some of the simplistic reasoning that permeates so many "survivalist" sites, with an inordinate emphasis on weapons and military tactics - not to say that such means could never be necessary, but they are not all that likely. It's more productive to focus on the far more likely possibilities.