Alphinaud does make light of this in the 2.3 storyline I think. He mentioned how everyone sees each other in a stereotypical sense; Limsians are seen has shady pirates, the Uld'ahns are con artists that only care about coin, and the Gridaians are a bunch of tree huggers. As it was mentioned earlier, all 3 city states have their own major issue that outsiders or non natives take notice to.

If you want to go further, go to the chocobo stables in the Central Shroud and you can see an Uld'ah merchant trying to get a native Gridanian to sell his chocobo and use said profits to buy 2 or more chocobos to speed in production.