>>717768575
It was going to be an issue only with the influx of Aether from The First. Normally, Black Rose is just nerve gas that can be filtered out via basic protective gear that the Eorzean Alliance had. Without it, it wouldn't turn into an Aether-eating-soul shattering plague that morphed into a Grey Goo scenario where it continued to make more of itself as it rampaged across the planet.