As every aspect of life, especially goods and services are becoming digitized and have their values exchanged on virtual platforms, it's only natural that payment methods will also follow the trend.
in fact the future money does not follow the trend, but that certainly follows the developments that occur, if we trade with a traditional system like in the market maybe paper currency is still very much needed, but trade is now very advanced not in one location like in traditional markets but trade is now between regions, so it really needs a medium of exchange that follows the developments of the digital currency, so the change in the payment system is always changing following the needs of trading agents.