Gallia hasn't won, so claiming them to be the victor is either a major red flag or a classic case of people having too big an ego to balance it, which since it's Gallia I can absolutely understand. Regardless, there was absolutely nothing wrong with the system staying Edinburgh, or Orkney, and the Gallic factions simply referring to them as Aquitaine or Brittany (or Bretagne, whichever), or Leeds as Agincourt. It kept the vanilla consistency, it kept people happy, it didn't make threads like this and it sure as hell didn't seem to make a difference.
I'm blatantly not in favor of this. The war is still on and while renaming systems definitely sounds like a Gallia thing to do, there's no reason why every faction in Sirius should suddenly accept an update to their StarChart32.dll and suddenly accept this new change that Gallia has shoved forth.