In many cases materials were used in areas not possible by our understanding of their level of technology. Or similar structures appear around the globe before global travel. Or folklore mentions contact with aliens or alien described technology.

I don't believe its a race division . In the past most ancient powerful knowledgeable civilizations were not white/European but when they were they were equally labelled like Stone Hedge is from white/european origin but often is linked to UFOS origin.

The quack archeology field is pretty massive. I see what you’re saying and I wouldn’t be surprised if it is a little bit of both column A in some cases and column B with others.