Why? He says to Ses that the Gods say such sweet things and honor him. He just sees Nayu rides across the sky (which is ambiguous in Akka's Cell dream) on a golden (or white).
Because I was operating under the assumption that, at face value as supposed by the characters in the story, Nau-Cayuti as the sender completely invalidates any objective meaning behind the 'prophecy'. Nau-Cayuti could not have sent the prophecy, therefore it's nothing more than the delusion of a dying man. That so many have acted on it in the years to follow is interesting, but for entirely different reasons.
Though I'm realizing that "Nau-Cayuti or nobody" is a false dichotomy, and the notion that
someone else sent Celmomas' dying daydream raises even wilder questions regarding just who, and why. It's become more interesting to me to ponder what Outside agency could do such a thing, rather than less, as it was when I first posed the question in this thread.
Whether Kellhus or Ajokli or whomever, machinations from the Outside (which certainly seems to exist outside of time in the general sense), he's perhaps conditioning the way for his own arrival. Though if Kellhus, it's getting into wibbly-wobbly-timey-wimey stuff that's even harder to speculate on, because that much was already done
before he ever went Outside.
Which leads me to questions about what
else Kellhus might have tried to do to Condition the way for himself. Nau-Cayuti, as TNG, shouldn't even be visible to any Outside agency, and yet he is somehow the "beloved of the Gods?" (though I forget where exactly this reference came from).
Is another agency posing as NC in the Outside? Saying sweet things that comfort, as well as serving interests beyond what the subject is immediately aware of is certainly a Kellian-style action.