Bitcoin itself cant help poor countries but it can help people to earn money with bitcoin. and if you are a hard working person, you can take it as a full time job and help you somehow to have a good life.
So how people from poor countries can work for bitcoin if internet connection is really horrible? Also how they will do such bitcoin earning method if they are lacked of devices?
And more importantly, how they can use their bitcoin if no exchanger that has a convertion services is not available since I think no exchanger will opened services for poor countries due to lack of accessibility.