Irrelevant when the circumstances were far different for each setting, G'raha had the existential threat of the Sin Eaters in a world with it's less advanced society than Eorzea for a century after arriving in the 1st that prevented expansion and technological advancement on a large scale. Alexandria on the other hand was living peacefully for centuries after their barrier was erected and allowed Everkeep to be built without an existential threat like the 1st had. The world before the Storm Surge was also advancing that led to the technological arms race for Electrope. It's why Alexandrians are pampered as a society, it was plain with their centuries long peace before the war Zoraal Ja created disturbed that. Alexandria being peaceful over the course of over four centuries prior to arriving to the Source would develop a society that places high emphasis on fashion, entertainment (The Arcadion) and more like irl western modern societies are. The Burj Khalifa looks more like the Crystal Tower than Everkeep and Sphene also didn't come out dressed like that too, so I dunno why you even brought this up???