I'm thinking since bitcoin is very used as a official currency on internet but still not used by many people since its popularity is still not that high..
There is nothing like official currency online and NO its not only because of the popularity but also because of the precautions one has to take to use it properly.People simply use the fiat and do their stuff cause not everyone cares about the anonymity or their privacy.
I don't think that some big country would declare Bitcoin as their national currency and especially not in 2016.
You sure he didn't said 2026 ?
What if on year 2026 is a the year where bitcoin is known by most people ..