The current financial system demonstrated its inefficiency in 2008, but USD is still a reserve currency. Why should Covid-crisis be much different? The entire world is entering the recession too. It isn't the  dollar apologetic polemic, it's a fact that there isn't a worthy alternative to replace it.
I've also read some analytics about the possibility of returning to the gold standard. If it actually happens, it will stop the dollar from free fall and made it the better reserve currency.