No state or political entity will EVER support en masse a currency that it does not control and/or is NOT backed by another state with larger economy!
In Sept 16 1992 the BoE withdraw the Pound from the ERM as a precaution after the most fierce attack the BGP ever received. The cost was ~ 3-5 Billion pounds. The GBP came out wounded, but it came out in one piece because the government had a say. Millions of people in the UK lost money indirectly, but the government was able to minimize the losses. Now imagine if the UK that day had the bitcoin, what would you have them do, block ISP traffic? How would you explain what happened to the population?!
Using BTC as a state currency is not just anti-democratic, it is pure insanity.