It's a whole other discussion that's been hashed out several times already, but suffice it to say, I don't think it's that clear cut. FFXIV is a setting in which identity is treated as personhood regularly, and the Sundering, as we hear in ShB, destroyed most of the Ancient's memories and culture. And situation where someone's natural lifespan is decimated is also an indirect sort of killing akin to giving someone radiation poisoning. When you consider the impact across the generations, it feels like an even greater atrocity to me personally.