I don't buy the (fairly common) idea that in the post-national Future all humans will look alike, though it's a convenient device here. I wonder whether I've ever seen it used this way.
The traits that we now call ethnic may cease to be ethnic markers, but they'll continue to appear so long as the genes exist, albeit rarely in the same combinations. Is there any reason to expect Akon to recognize which clusters of traits were once ethnic markers, out of all the combinations existing in his time?
"Every human culture had expended vast amounts of intellectual effort on the problem of coming to terms with death. Most religions had constructed elaborate lies about it, making it out to be something other than it was – though a few were dishonest about life, instead. But even most secular philosophies were warped by the need to pretend that death was for the best. ¶ It was the naturalistic fallacy at its most extreme — and its most transparent, but that didn't stop anyone. Since any child could tell you that death was meaningless, contingent, unjust, and abhorrent beyond words, it was a hallmark of sophistication to believe otherwise." —Margit in 'Border Guards' by Greg Egan
Eh? Perhaps I was too young to get (or remember) what's so great about it. (I haven't read much Asimov since my early teens.)