The article doesn't explain how the attack will take place especially why it would be quick. It might be better to treat the dollar to a slow lingering death rather than a quick death. Our enemies may not have much use for gold or silver either except as a proxy for the commodities that they can't obtain without the PMs.
Primarily they want to sideline America to ensure that they can occupy the rest of the world. It will take more than a quick crash of the dollar to do that. While they might charge more for strategic goods, they may for example sell us a nice supply of rope cheaply.
America needs industry.
Stop buying everything from China.
Bring back US industry.