if something "shouldn't exist" in a time period it has nothing to do with judging those people as inferiors, its simply the timeline of the development of technology (or our misconception thereof)
https://entangledstates.org/2021/10/05/the-connection-betwee...
https://www.sapiens.org/archaeology/pseudoarchaeology-racism...
https://hyperallergic.com/470795/pseudoarchaeology-and-the-r...
https://www.science.org/doi/10.1126/science.364.6436.110
Also, Even today white supremacists think Einstein was a fraud:
https://christiansfortruth.com/albert-einstein-plagiarist-an...
But that is harder to believe than "Dumb Egyptians couldn't make pyramids, so aliens did it..."