I would have thought they would prefer to have as much money sent into Argentina as they could get. But what do I know. I sent my novia $500 worth of pesos today. Rate was 1071.WU lately for a few friends also is asking to verify their ID's, etc. Timing doesn't seem like coincidence with the other thread about banks contacting clients about deposits, etc. I would assume many of the people sending in WU payments are tourists but maybe the government will be able to track with migrations as well as it's linked by passport #. None of the other administrations have really cared about this but Milei seems to be wanting to get Argentina out of grey status with worldwide banking sector.
I know a lot of locals get payments via Fedex for work they do. Not sure how they will get affected as I assume they aren't declaring all this income. Probably they are wanting to track that as well.