Maybe reading his post twice wasn't enough. Or maybe it's just that Bitcoin is not just "money" but the whole underlying technology ie. the blockchain is about to introduce huge changes into things we have been used to do in a certain way.
Okay than this is a misunderstanding. I am sure Varoufakis was talking about the currency. There is no doubt whatsoever that the protocol is one of the most important technological advancements of the past decade, maybe of the 21st century.