
Originally Posted by
MikkoAkure
I’m under the impression that on the surface Sharlayan and Amaurot using Greek is just because of the thousands of years of western culture associating the Greek language with knowledge. If you wanted to justify it in-universe, you could say the Sharlayans picked it up after studying the Ancients.
Not to veer entirely off topic, but I still believe that the original Archons who founded Sharlayan were either a) the actual Twelve in human form or b) acting on direct behalf of the Twelve, either of which put them on the trail of eventually making contact with Hydaelyn and thus solidifying the Ancient association (there's also the very conspicuous shots of the assembled Forum in their identical robes and obscured faces being direct parallels of assembled Ancients, but that could just as easily be entirely within the context of Endwalker's story).
This might get some more attention soon in the Occult Crescent with the accidentally leaked BGM making a tenuous link to the War of the Magi.
That said, though, I think I broadly agree with the 'on its face' interpretation you presented, the classical Greek association seems far more likely to be because it's suitably ancient and culturally ubiquitous. The Ancients/Ascians also fulfill a Titan-esque narrative role to the people of today; Hades even has a spell called 'Titanomachy'.