Yeah, True indeed. Bitcoin and other altcoins is very useful to countries with troubled economy most especially on 3rd world countries where means and outlet of money is rare.
Bitcoin that is in good use will be a benefit for a country, but if it is used in bad things of course it will cause trouble to one country. We cannot say that it can be beneficial to a 3rd world country because in a 3rd world country not all people can use computers and have access to the internet, they are still relaying on fiat money.