I'm not saying it isn't possible, because anything is possible. Just that, should you decide to take that route, be aware you are effectively re-writing Eorzean history for the sake of having one Hyuran Amdaporian.
Is it possible that Hyur visited Eorzea before the 6th Astral Era? Certainly. However, Eorzean archaeologists and historians date the first Hyur migration at roughly 1000 years ago, which resulted in bloody territorial wars between the newly arrived Hyur and the Ishgardians, the Gyr Abanian Elezen, and the Belah'dians.
It'd be like when historians IRL discovered the Spaniards weren't the first Europeans to "discover" the New World, but instead the Vikings already beat them by like 500 years.
Is it possible that Hyur visited Eorzea before the 6th Astral Era? Certainly. However, Eorzean archaeologists and historians date the first Hyur migration at roughly 1000 years ago, which resulted in bloody territorial wars between the newly arrived Hyur and the Ishgardians, the Gyr Abanian Elezen, and the Belah'dians.
It'd be like when historians IRL discovered the Spaniards weren't the first Europeans to "discover" the New World, but instead the Vikings already beat them by like 500 years.
