In a country choked by high internet costs and limited options, Zimbabweans are turning to remarkable ingenuity. Facing arrest and equipment seizure for using Starlink, tech-savvy individuals have devised a way to disguise the kits.
Indeed Zimbabwe is not representative of all Africa.
However, Zimbabwe actually has better internet that most African countries. At least it's in the top 10 of 54 countries on the continent according to Ookla (http://www.netindex.com/download/allcountries/)
If Zimbabwe's internet is bad enough to cause users problems loading Google+, It's likely worse in the majority of the countries on the continent.
Generalising therefore was not meant to paint the picture that all Africa is the same, but that Google (if they read this) need to have a strategy that takes into account the poor internet quality the bulk of Africa has.