That would be a very big maybe. Cryptocurrency being recognized as a global currency with high level of adoption is totally different from it replacing fiat. As it is, what this topic is so much about is seeing a time coming where everyone will simply convert to cryptocurrency.

As cool as that sounds, it is unrealistic. Everyone can certainly not end up using cryptocurrency as that would first of all take a long time before we even get to hit some good level of mainstream adoption and the fact that it would be hard in terms of the technological aspect for certain people to have access to it.