Quote Originally Posted by Nalien View Post
Nothing is, except the fact that that isn't the way SE wants to write it.
We don't know how SE wants to write it, because they haven't written yet. If 2.4 comes out and new players are taught out to be ninjas because of Yugiri. Yes, that is a major paradox and would be retconning. If they want to write a story of how you, a rogue, stole some mystical stone/scrolls from a boat that turns out to be from Doma, they could.
And as you said, Ninja's are a secret stealth force, having hidden sects in major capitals wouldn't be that strange of a thing and having them reach out, in secret, to a talented Rogue wouldn't be that crazy. If the existence of Doma predates 2.2, then they certainly have the room to do so.