El Salvador probably wanted to keep their image as a bitcoin friendly country. Not only do they want to appear friendly to bitcoin, it seems like they want to be a country known for having a lot of bitcoin and possibly get investors in their country. I have seen some people doubt IMF's reports but what do you think? It makes sense if bitcoin has become El Salvador's political move.
It will be a long and ongoing battle between the two sides regarding Bitcoin.
Anything is possible, but trusting the IMF regarding Bitcoin is not that easy. The IMF is doing what it should do as an organization in maintaining the stability of the global financial system, and El Salvador as a country is also doing what it should do, and as far as I know, they have not hurt anyone with Bitcoin legal tender.
Political move? Politics is the art of achieving a goal. If El Salvador's goal with Bitcoin is to achieve its objectives, then I have no issue with it.