It's cool the guy had a chance to meet the president, but his bet sounds unrealistic and I bet the president thought it was a joke. Not to mention that it might as well be that it's not up to president to choose the national currency. Moreover, even though I like the idea of bitcoin as money, it seems clear that bitcoin itself cannot be adopted that widely. How will people buy food in the supermarkets, waiting around an hour for network confirmations? Someone might of course take the responsibility for this part, but this will mean there's now an intermedairy that will probably charge additional fees. And bitcoin fees are okay when the network is not busy, but we've seen how high they can be. I think that bitcoin as we have it nowadays is not apt to the task. Lightning network might be a viable solution, though.
Yes, this is true in respect to the terms and given that Argentina isn't having any crisis with her economy unlike what we had with the Venezuela economy and how Maduro snuggled in Petro. But come to think of it I do believe that countries should on their own adopt one form of cryptocurrency or the other without any coercion from any quarters. It's the rave of the moment and no one should go against the tide.