I don't get the racism argument. Claiming there was an ancient civilization existed that taught early civilizations isn't racist. That an ient race doesn't exist anymore. The early civilizations they claim to have taught don't exist anymore. Modern day Egyptians have as much to do with ancient Egyptians as they do with modern Polynesians. At a certain point, we have to recognize that we're talking about so long ago that race is out of the equation.
Like, don't get me wrong, his claims aren't scientific and he definitely seems like someone with a theory in search of facts. But I seriously do not get the racism claim. It doesn't belittle modern societies because no modern society can really claim ownership of shit that happened over 10,000 years ago. It's insane to think otherwise.