It makes perfect sense that the people running the money game would not want their "suckers" to have guns. This is as old as time, so, no real surprise here.
Just like any boycott, whatever these Leftist idiots do is meaningless. Anytime they refuse to do business with things like Rush, or arms dealers, they don't stop anything. All they do is create an opportunity for a new competitors who is not so ideologically handcuffed.
On a side note, all money is basically a government check, or at least it is supposed to be. At one time you could take a monetary note into a bank and cash it in for the equivalent amount of gold.
When the U.S. dollar was taken off the gold standard and so called 'fiat money', or 'printed money', became actual currency, money became intrinsically valueless. A U.S. five dollar bill has no more real 'value' than a five dollar bill from a Monopoly game. It only has value because the government says it does, that is the only difference.
People have come to commonly accept a U.S. dollar bill as a 'value marker'. The bill itself is a worthless piece of paper, but it represents $5 of value, like a casino chip, just so long as everyone keeps agreeing to this.
This shaky monetary system depends on people honoring the rules. Once people start to want something real that they can hold in their hands and use or eat, instead of some amorphous "idea" of worth, then this system will collapse and fall apart.