Lot of countries do not allow to use crypto currencies and they discourage using them. However as far as I feel, trading with crypto is not that harmful for the economy of the country. As an example, if a person has Eth and someone from another country needs to buy Eth, that buyer needs to pay the seller in terms of dollars. Then that seller needs to convert that Dollars to his native currency which means it creates a the demand for the native currency and increase the value of the currency. May be the government is unable to add a tax on such transactions but it is beneficial for the currency used in seller's country.
What do you think about that?
not in country but i can say that they goverment didnt want cryptocurrency and maybe because of the manipulation and goverments scared about that because theres a lot of people like newbies will going to loss money if they didnt know all about crypto and the big risk in here.
If you look around there are numerous examples for your mentioned topic like many countries are using it and are progressing with it with the passage of time. Countries like Japan, America and many more countries recently Germany also accepted it as a currency with can contribute to the economy. Other countries have also a positive image now due to these recognizing activities of Bitcoin.