SKA in Southern Africa?
Sure, the Karoo is pretty quiet and good for astronomical purposes, That might give South Africa the edge when evaluated by astronomers, but that's not the only consideration. The administrative people would likely prefer somewhere else.
SKA is a long-term project. South Africa is unstable and not improving. Murder and violence are rife. Power supply is iffy and unlikely to improve. The chance of SKA kit being stolen for scrap metal is bloody high.