For the timey-wimey crowd I offer the following: Everything is cool because the Fighting Monks of the Order of Wen ensured it would be so, as they do in nearly every work of fiction that ends more-or-less happily for some number of survivors after a time-travel event.

To the OPs first comments:

1. This is standard operating procedure for the Warrior of Light, who knows less about politics and more about the Power of Making Friends

2. As I previously posted, coercion does not play a part in the storyline. Accepting the request and the aftermath of such acceptance will be the storyline.

3. Knowing nothing of the petition or the petitioner, stating that this is a secret being "kept" from the Warrior of Light is a bit like saying "My boyfriend doesn't tell me everything about what he does when we are apart."

4. The individuals involved don't know much, if anything, about Tural. Both G'raha Tia and the Warrior of Light spend time reading some of the books available in the Noumenon. That's what people do when they don't know anything about a place they've never visited before. We are extremely spoiled in these times, because we have access to one of the Wonders of the Modern World: the Internet. How would players respond to having to read every last tome available about Tural before they can begin the next expansion? The four volumes are enough to provide flavor to possible storylines without overwhelming players with the sociopolitical/meteorological/geographical/religious/statistical information available for, say, South America.