To be honest, I had trouble with the "old english" at first, but as seems to be the case with most dialects, I start picking up on repeated terms and phrases as I apply the context of their previous usage, and suddenly I catch myself almost using them IRL ('anon' comes to mind the most here). I think people have trouble with this because the English language has evolved to remove most/all of its original flourish in favor of speed of communication. With the exception of Urianger, and half or more of the NPCs in Limsa Lominsa, I hardly ever find myself stumbling over reading the text in this game and comprehending the point on the first pass.