That was already admitted, as was the fact that before, in Africa, having no exposure to religious texts or monotheism, they concluded reality looked like it was produced by a Creator.
Did they also conclude that the earth was flat, and that the stars, sun, and moon went around the earth?
Seems like most, even all, cultures concluded that the earth is flat, and that the sun, moon, and stars go around the earth without having any exposure to religious texts or monotheism.
It is entirely possible for cultures to reach the same conclusions without those conclusions being true.
If I had a million dollars, I'd buy you a monkey.
Haven't you always wanted a monkey?
-- The Barenaked Ladies