The Demise of American Economic Hegemony?

There is lots of chatter about the demise of the dollar, especially since the US placed unprecedented sanctions on Russia. Many US commentators are talking about the end of the dollar's dominance as a number of US allies trade with China in currencies that do not include the dollar. It seems not a day goes by without China's currency, the Yuan being in the news. The recent gathering of the BRICS organisation revealed they are considering launching a new currency. Many consider BRICS will replace western institutions such as the G7 and the IMF. So are the days of the US created financial order numbered?