They have already passed the legislation in the parliament (with a super majority). So this was not some empty rhetoric from the president. But still, this is the first time that a country is making Bitcoin as the legal tender. I would like to see how it goes. There can be practical issues on the ground, especially with the exchange rates being so volatile. And for the merchants who would like to accept payments in BTC, there can be tax complexities and paper work to take care of. At least initially, there is going to be a lot of confusion.