In 2009, the first cryptocurrency -Bitcoin-, officially launched and since then has continued to roll into a snowball effect that poses a serious threat to the existence of conventional finance. As much money as the restless World Central Bank, the government seems helpless and dragged into the vortex of the evolution of the world's financial system. The Covid-19 pandemic has become a catalyst for forcing the entry of all financial and banking industry sectors into the digitalization era. Imagine a concept of a world without physical currency. It is strange, but real. Money will be removed and replaced with a digital currency system.
I don't think it is possible to remove and replaced current money with digital currency. Even though the adoption of crypto or digital currency is increasing every day especially when the pandemic hits, it will not replace fiat. As long as there are people who want to use the current money it will never be replaced and the government will never let it happen. It is possible that crypto and current money will co-exist forever but will not replace the current.