Do you really believe that it is just about the benefits? There are a number of authoritarian regimes around the world, who are afraid of losing their control over the people. There is no doubt that for the ordinary citizen Bitcoin is immensely beneficial. But look at the ones who lose out - bankers, payment processors, remittance services.etc. On top of that the government loses its ability to print unlimited amounts of money. It may be beneficial for the common people, but that is not the case for the government. And that explains why some of them are very hostile towards cryptocurrency.
It is time for the government to listen to what their people will and try to benefit themselves. I am sure that bitcoin or crypto can give benefit to the government, not just to their people but the government must search for what is that.