We can't blame the government. The major focus of any country is to generate money from its people. How is this possible, levy tax over the people. Atleast Argentinian government is making plans for the taxation. However this can't be made immediately, so the focus is good with short term changes. Already India have put 30% tax which is very big and limit people from using it.
Exactly, Argentina is also a tax dependent and they can't survive without this especially the economic situation that they are into right now. They still need to create a law for this one, this is not easy to execute but expect that they are slowly getting there and taxing your profit in crypto is really possible. Argentinian should look for alternatives, most probably there's still a way for them not to pay huge taxes, they just need to understand the new law.