I agree, it's a great way for people to find job opportunities outside of their own country. There is no language barrier once you learned English and also geographical borders are not going to be an issue as everything is done online. Maybe some special crypto courses for people in Africa could help them to take advantage of the new opportunities.
Who is going to sponsor these crypto courses? If someone wants to learn a new skill, then all the material is readily available online in YouTube and other sources. The only thing to remember here is that most of the material is in English and therefore they need to have a good command of that language in order to learn the skill. Gone are the days when you had to spend a fortune to get yourself educated. Nowadays a lot of educational material is available for free and all that you need is a 3G connection and a smartphone.