That's my hangup with him. It's not that I have any specific reason to doubt anything about him, it's just that I've never seen him vouched for outside of his weird cult like followers. He may be legit, he may not be. I still follow him though and I'll listen to the new Rogan podcast after my kids head off to school.
I always thought gun shows were bad, then I went to a knife show at the fairgrounds in town. It was full of, uh, interesting people.