Exactly, it's even predated by an olmec bird-snake/dragon god, but we don't know how it was called then.

Both represent the feathered serpent god, which is usually depicted as a dragon-like figure.

The aztec had Quetzalcoatl. The maya had Kukulkan.

Yes but let everyone use chemical or technological enhancers freely.

In that case we should learn tachygraphy/stenography, that would be a game changer for note taking.