The article makes it seem like the UN's mostly concerned about destabilizing/dethroning the central banks in these countries.
Such private digital currencies have become particularly prevalent in developing countries, entailing considerable risks and costs regarding national monetary sovereignty, policy space and macroeconomic stability.
Further, it seems like the UN is much more concerned with the geopolitical stability of developing countries than the freedom/well-being of the people living there.
Kinda makes sense where they're coming from, but the recommendations they give are egregious.