Even if it is it's not as if Eorzea is a stranger to that sort of mentality. Heck, pretty much every City State thinks way too highly of themselves and if we take PvP into account...they can't even work together sensibly at times. Sharlayan is implied - at least in the AST quests - to be similarly self righteous. Ala Mhigo would not doubt have continued to try and take over Eorzea if not for Garlemald's intervention. I'm also not entirely sure that life would be much worse under Garlean rule when discrimination, poverty and class warfare plagues...pretty much every corner of Eorzea anyway.

Eorzea is simply the 'protagonist' and thinks much too highly of itself. Garlemald has committed atrocities, yes, but it's a recent affair. Ishgard has been doing it for a thousand years - yet stands to be forgiven despite that.