I will take a swing at this. It is very easy to get extremely negative during times of strife. However, also keep in mind that asset prices do move in cycles, so mega bearish people like him will be right for periods, yet get runover when things are good. He is one of the most negative people out there, so just keep that in mind when taking his advice. He sold his Newport Beach home in a panic and moved many years before prices peaked, so he was way off on that call.
It is more likely that a more balanced view of things will lead to good returns. I am fairly sure I read a post in here from someone who had lost money with him from day one of investing with him.
He is so outspoken that there must be alot out there on the web about him for you to research.