The fed expanded its balance sheet from less than $1 trillion in 2008 to over $4 trillion in 2016, practically dumping $3 trillion into the economy for all intents and purposes. What was the effect of that on crashing the dollar/making it worthless[0]?
There was extraordinary demand for liquidity during and following the financial crisis. Because the Fed was expanding its balance sheet to meet market demand, it did not crash the value of the dollar.