It's truly astonishing how old Egypt is. The sphinx is 4500 years old! I listened to Bob Brier's course on ancient Egypt (from TGC) and it was mind-blowing.
Egypt's greatest legacy is that its early history was so spectacular, and evidence of that is so visible today.
All it's saying is that most people don't know enough about Mesoamerican civilizations to differentiate clearly between the Aztec and the Maya; the Maya have been around since long before Oxford and that's why people anchor 'the Aztecs' in the distant past. This should be pretty obvious.
It's like saying "Did you know that the Aztec Empire is older than the University of Reading" -- yeah, that's not what most people are thinking of when they think of an old English university.
I don't want to contradict the thesis of the article though, it's true that our perception is skewed. My favorite version of this is that Chinese armies were fighting each other with gunpowder-based weapons in the 1100s.
But the really mind boggling numbers are in the Mediterranean. Naples is originally Nea Polis in Greek, so "New City". Barely 2700 years old.
Civilization is really old in some places.
I hope that before I shuffle off we have agents that can emulate these people with subtlety and depth, and I can invite them over for long chats. Have them available as podcast guests. Assign high school students to interview them. Face them off in ideological cage matches. Learn first hand from them about the plasticity of human ethics and culture. Hire Beethoven as a piano teacher, Faraday as a lab assistant, Machiavelli as a wartime consiglieri. But it can only work so far as the agents know the limits of their own training data and not make shit up.