Its pretty clear cut. He means he's heard some messed up stories about them, and he wouldnt trust them. Also, I fully agree with Mike, I bought his G36 for a friend of mine (Yes he is Age verified, I just knew Mike before hand) and we've had nothing but great experiences with it. Shoots very well, the body is very well constructed.
I knew a man once who said "Death smiles at us all. All a man can do is smile back."