no i do not thing that bitcoin can help poor countries because the poor countries have no facilities available to them, they cannot even trade bitcoin because they even cannot afford internet and cannot having good amount of money to buy bitcoin.
poor countries doesn't mean their people can't afford anything,inside poor countries also having classes such as high class(rich),middle class,and the poor
and even if the people can't even afford a computer and an internet,government can just make a computer + internet access for commercial in there,only if the government want to put an effort