No, I do not believe that the government is propping up the stock market. I don't think there is any way they COULD do this, other than buying stock to set a floor price, and we know they are not doing that.
There is a sell=it-all-and-invest-in-gold promoter every month. If I had listened to the first one, I would not have half the money in my IRAs that I now have.
This particular guy made less sense than most.