That's definitely confusing
I wonder how easy the languages in the Horn would be to learn for inhabitants of that area, like for an Afar to learn Amharic or a Tigray to learn Somali
If there's one thing we can be proud of as Afro-asiatic speakers it's that we likely had complex language before anyone else, since it's the earliest recorded language family
They learn pretty easily, Africans in general do. The good and also bad thing is most bilingual rural people learn extra languages orally, but most people are illiterate anyways so it doesn't really matter.