Of course.
The 6 Gods, entities who watched over the world through the millennia.
The mythology that completes Eos speaks of six Gods. They are entities that bestowed powers upon Kings and Oracles. The six Gods created a shining ring that was passed down through generations as proof of the King, in turn their connection to the Royal Lucis family is profound.
They use a language unknown to ordinary man and the only beings able to directly communicate with the Gods are limited to beings like Oracles and envoys of the Gods.
In the legend regarding the Scar of Terupa(?)*, the battle of the remaining Gods, the [Great Demon War], it is said that the origin of the war resonated from the God of Flame Ifrits betrayal. However, it is not known in detail.
*Perhaps I missed it in-game. It says テルパの爪跡. Not sure what テルパ(terupa) means. Don't tell me though. I'll figure it out myself.
This is an explanation in the lore. Not Tabata talking. Someone was trying really hard to stir up a storm.
In regards to the response to this from Japanese fans...
http://joker004.blog.fc2.com/blog-entry-16490.html
They are not flaming their pitchforks and flames at Tabata, but rather the half-assed explanation.
Though some are saying that this goes with the lore. Like this happened in the ancient times and the records of the legends were lost over the millennia resulting in missing details. Saying that this makes sense.
However some are also criticizing for the lack of explanation in character motives. Like what betrayal? Why a betrayal? When? How?
Think of it as what you want. But this has nothing to do with Tabata saying ''I didn't know''.