you need to take in account in Nazmir the principal dealer with him was us our chara at least) not Talanji, in which he have some respect for the possible gain he can have and maybe the connection with the darkspear. While in the other hand you have the Zandalari royal family that hates him and maked him as a loa and they are always trying to make him less and dont even ask for his advice.
he had no love for rasthakan and surely it have a little for talanji so the way he acts depending on the person who is asking something from him fits him pretty well.