Cryptocurrency is trust and freedom. which is essential part for a developing country everyone should accept it when everyone is accepting it they way it is not by imposing centralisation.
It will depend on the leader of the country . no matter how we say crypto is freedom and trusted but if the leader of the country does not want his people to be free and he are not trusted. We cant do anything about it.
For the countries with have a good leader, we have seen them developed naturally and take note there are no cryptos that time, that is why crypto is not essential although it is helpful for a country to become more developed. The only thing that crypto can cause damaged to a country is when people use it in a wrong way. Not only that it will cause damage to their country but it can also a damage to the reputation of the crypto itself .