no, because there will always be those scared average joe, that will rely on the bank, no matter what new tech you have, you need plenty of new generation to remove those people
it's the same as right now there are still people that refuse to use credit card or new services...
Credit card have become a usual thing nowadays and most people are already using it. Even commoners or people that live in a not-so-developed place, they know the use of credit card and debit cards since it's not that hard to understand. Let's say that mass adoption has happened. The average joe will eventually adopt to that but there will always be those that don't really want to accept change. It will take generations before the new currency totally takes over and that's when the new currency has become the normal thing to the world.