As an African, born and currently living in Africa where I develop and deploy ICT solutions to the most remote areas, I would like to say that what you are saying is utter uninformed bullshit.
The superstition that is prevalent is one person believing neighbors and relatives are bewitching them or using them somehow to fuel their success. Having come from such a background, that has not stopped my education. Secondly if you spent 1 hour in any African village, you would realize how highly people think of their own governments, white people and people from towns. The challenge we have is that due to corruption by our own people (who the multitude trust) who fail to bring us the books, pens and pencils, we fall victim to the west's kindness and sometimes propensity for such uninformed nonsense as you have written above.
Also, absolutely no one would take any of those South African students seriously, it's a joke. We are not as backwards as you think. Unless you also believe thoughts and prayers will stop your mass shootings.
Lastly, the west's general belief in the superstitution of praying to a guy who was nailed to a cross then resurrected after 3 days seems NOT to have had a negative bearing on your development. How do you suppose witchcraft has held back Africans?