This is all chatter that they write about the complete elimination of money. I think that the familiar currency will exist for a long time.
You are absolutely right, this is all chatter but we should discuss it on a formal way as we know that fiat is currency issued by governments of countries and many countries have their own fiat currencies. No one can eliminate fiat currencies either totally or slightly but governments who created their fiat currencies can eliminate it but we should think why they eliminate it, they do not want to eliminate because this is something which make their economies.