2nd paragraph pretends to be about Africa, but is really just an opportunity for the writer to reiterate the myth that carb loading is essential to athletic performance.
Also, the premise of the article would be offensive to any paleo adherent. I'm not paleo, but as I understand it, paleo folks aren't in the re-enactment business. They just care about making nutritional choices based on what we would have eaten for our entire evolution prior to the agricultural revolution, which occurred 1 geologic second ago. They don't deny that people would have eaten fruit when it was available; they just realize that for lots of people in lots of places, there was no fruit available for much of the year.