I don't know what bothers IMF, because whether they've made a purchase or not is up to them. The IMF tries to support a nation in its well-being, but these days such incidents aren't happening. In the past, the IMF had big roles, and now countries are trying to stay self-reliant and improve their economy. After the young president of Burkina Faso made the country people work for the betterment of the nation, there was a big transformation. Similar things were experienced by El Salvador on the adoption of Bitcoin. Even if the country is lying to the world for the betterment of the nation, there's nothing wrong.
As long as the country gets the better of it, and its people have something as an alternative, better than what is presented to them: it's good.
Surely, not everything will stay on broad daylight, and something is left behind the curtains: but overall, you would look at the results of it, especially if we talk about the adoption.