Most people thought that after the virus outbreak, money would go into Bitcoins and other cryptocurrencies as Bitcoin is considered to be the only ‘’safe-haven’’ asset at the time of crisis. But Bitcoin collapsed by 15% after the virus outbreak, thereby defying people’s expectations.
Say's who? We really don't know if people are going to pour their money into bitcoin. Only bitcoin is considered as safe-haven, as fair as I know. But it is not a hedge against this kind of global pandemic.
However, it is to be remembered that the value of Bitcoin is driven by demand and not on factors like interest rates and GDP than other fiat currencies depend on. Therefore, the prices of Bitcoin though showing volatility is most of the time, still remain steady when other markets fall.
You can't compare bitcoin and fiat, bitcoin as limited supply, while central banks can print as many as they want to cover everything.