The genetic differences are negligible.
Like your first link showed: There is a greater diversity between African countries than any African country to Europe.
You could break down those differences down to the village level but it’s a useless distinction and more likely the base useless racism and nationalism.
By that logic every single humans death is a loss of genetic diversity.
And thanks to international travel and migration this differences already get mixed up.
> By that logic every single humans death is a loss of genetic diversity.
This is "how many grains of sand make a pile" territory, isn't it? You're claiming that because a change of X is negligible, it must mean that a change of 1000000*X is also negligible.
As for my first link - I couldn't find where it showed that, and even if it did, it doesn't follow that the differences are negligible (to whom?) [1]. Why does Africa having a lot of genetic human diversity, make those differences negligible?
[1] Especially since Africa has two completely different populations due to the barrier of the Sahara - of course the difference between Europeans and Arabs are smaller than between Arabs and Namibians.