Probably due to the special relationship that is afforded to DZ by Yu Yevon. Though DZ is an Aeon, it's got the most exceptions to it. Regular Aeons have multiple incarnations, that is, to each Summoner, the Aeon is slightly different. Ifrit can't be called to two different Summoners (eg, Belgemine), and neither can Bahamut or any of the others. If Yu Yevon can't summon, then who else is there to do it? Even Anime gets Yuna after Seymour dies/relinquishes it.
It's probably protected by something they can't personally destroy, or they can't find it. Zanarkand in ruins seemed to defy certain laws of physics. It is possible that the fayth stones are catalysts, but once the creature has been summoned, it stays in existence until un-summoned? Either way, it's much easier to deal with something that has a similar base (treating Sin as a fiend), rather than deal with an entirely new system (fayth stones are ???).
The Aeon or Fiend assertion is interesting. Though it is because of the definition you've given us that separates the two classifications, it makes me wonder more about how pyreflies work. FFX-2 didn't help in this regard whatsoever. You will eventually have to take into account unsents, who are also fiends-in-training. Auron never seemed to succumb to hate at all, but he's no projection. As Big D has thrown out, most Aeons are former summoners, which I suppose gives credence to "it takes one to know one." Before you say Anima (yes, I thought about this, too while typing this spiel out), she's originally a Final Aeon. Different rules. I had read once before a theory that regular Aeons are just unused Final Aeons, which seemed to work, and accounts for the power loss, but had no true evidence to support it besides Anima.
EDIT: Wow, I need to connect my logic more fluidly. I think I'm skipping steps, here and there.







Reply With Quote