Possibly, even given Betteridge's Law of Headlines. The article is quite right that sending money is very expensive in Africa. I have employed (and still do employ) a few migrant workers and I can assure you half their pay goes home and that it costs a hefty cut for them to do so. I've experimented with various ways of making it easier for them, but short of sewing US dollars into their clothing when they travel home, there isn't much out there. The more SADCC countries start accepting Bitcoin, the easier this will become.