Faulty and weak. The vast majority of Afroasiatic languages are spoken in Africa. In fact, one of the largest members of this group is spoken in West Africa (Hausa).

Although, I suspect saying "North Africa" and indeed, "Afro-Asiatic" is to imply or ascribe non-blackness.

The influence of the "Ajami" scripts are also not being mentioned: https://en.m.wikipedia.org/wiki/Ajami_script

This was used to write several major African languages in the precolonial era: Swahili, Hausa, Somali, Yoruba, Mandinka, Wolof, and others.

And what do you think the adult literacy rate was in Africa before the Europeans arrived? It most likely started with 0.00....%