There is a colossal difference when we think of decentralized cryptocurrencies and government controlled fiat - but in digitalized form.
I hope danger of total control will be noticed and population will never support the idea of having digital government issued fiat as only option.
If you plan to go to Sweeden, they inform you to carry an embossed card with you (unembossed is not accepted in public transportation and in other services).
This card solution is not so dangerous, but centralized digital money sounds frightening...