Wonder if he's talking about actually decentralized and uncontrollable currencies or if he's referring to some type of government-controlled virtual currency?
Probably both, but considering the topic at hand, he may be primarily referring to cryptocurrencies. He also said something about it "these currencies" not going away and proliferating, implying that they already exist and are making their mark. That statement isn't really applicable to state-controlled virtual currencies considering their impact, or lack thereof, in the current world.
Either way, it's always refreshing to see someone in position who is at least open minded towards innovation.