Untangling the mess that Cristina left is not easy and will require the help of everyone. As you said, it didn't really matter who won, this problem was still there. What did I see reported something like 15 billion dollars that the government has obligations to cover due to Vanoli et al trying to make things look stable instead of trying to actually fix things? No matter who was coming into the presidency, Argentina could not have upheld the futures that Vanoli sold, as far as i can tell.
And how does one continue to maintain a fictitious price without enough money in the reserves anyway? How long could they keep wearing no clothes until there are even more serious problems?
At the very least, what I see is Macri talking to everyone and trying to negotiate a way out of this mess instead of a few people in an inner, closed circle telling everyone how it's going to be. They were trades made in bad faith with an unsupportable price - which, BTE, just about everyone had to know who was involved in trading at those prices. He doesn't seem to be dictating this to anyone, but rather is trying to figure out the best way to get out of a bad situation left over from unspeakably horrible fiscal management at best and sheer arrogance and corruption of the truth more likely.