I did not make that argument - I was talking debunking the "shared culture" idea and rejecting the lack of nuance. Corruption is not cultural - east and west Berlin had different levels of corruption due to something other than culture.

If you think all sub-Saharan African governments have the same levels of corruption, you're plain wrong. As an illustration: (in no particular order) Nigeria, Botswana, Kenya, Rwanda, Zimbabwe have corruption levels that range from "it's expected in every official interaction" to "you (civilian) will wind up in jail if you bring up the idea of a bribe". So there's nothing that's inherently African or cultural about it.