Well, to be fair, Civilization does not really have records any more of really serious large-scale Conspiracies, and if Golarion does, it is very possible that Keltham needs to be educated about this! This is more than usually likely to be a point where Golarion has something to teach the silly naive dath ilani!
For that matter, if Civilization actually is run by a Dark Conspiracy, Keltham probably would have been raised with huge obvious blind spots about it that somebody from Golarion could spot in moments. It's a great place to probe Keltham hard and try to catch him out in some blatant error he apparently isn't realizing for some odd reason.