An "African genius"? People have been doing this stuff for decades. For a very long time now you can buy a generic electronic fuel injection and ignition system, ready for customisation to suit your engine.
Of course it's the customisation that requires expertise. But there is lots of help available. For example, there is a whole community dedicated to the Microsquirt. Or there's the Arduino-based system - Speeduino:
https://github.com/speeduino/speeduino ...and plenty of others.
There is one thing I am unhappy about: this statement. "Even an engine from decades past can compete with the latest technology." This is tremendously misleading, although I guess it depends how you define "compete". But basically it just isn't true. There are no easy wins in automotive technology. Every tiny improvement in emissions, fuel consumption and performance is hard won, step-by-tiny step. And without incorporating catalytic converters there is no way these old engines can get even close to modern levels of emissions.
Good luck to the guy for helping keep old bangers on the road. But this isn't novel and I'm not convinced the word "genius" is warranted.
Incidentally, I don't think our governments and regulators are really interested in this model; those upgraded cars still won't meet modern emissions regs. Plus, of course, the powerful motor industry would prefer us to buy new cars. I think the regulators like a constant churn in the car market. I also accept that this is might be different in most African countries.
Until, that is, China starts assembling electric cars in Africa. Once that gets a hold the governments will suddenly get very interested in taking those old cars off the road.