coughsoda You should really watch the videos in Syzygy’s post here for Yoko Taro talking his mind about this very topic himself, specially the Drakengard 3 video.
Nier is central theme is suppossed to be self-righteousness, and how we, human beings, being capable of committing true atrocities in the name of justice or ideals that on the paper seem fine (like trying to cure your daughter/sister’s terminal illness), even without being aware of them.
It is a bit o a relativist take that I think could be argued, but that becomes extremely relevant and interesting under the optics of capitalist injustice and stuff like USA actively harming other countries in the name of a very warped sense of precisely that self-righteousness. Like when they invade a country to steal their resources in the name of democracy or whatever other nonsense they come up with.