In some countries Bitcoin has really exploded, like the US. I know Bitcoin has not really been legal worldwide, it's pretty new compared to some countries and some young people. Only those who really want to know and invest in Bitcoin will research it. Efforts are still being made to make Bitcoin popular or replace current currency.
We are born ready of any changes and new in this world especially technology. Only that there some people dont want to adapt the new development or innovation. Cryptocurrency is already known world wide even a low profile person. We only have to properly educate about cryptocurrency.