This looks like a scene from FLCL's episode 6 where Naota has his back turned from the camera while carrying a bass guitar, or at least the background sure looks similar.
If you listen to daemonhosts, they are still under control, and they are not happy about it. Once you piss it off, though, the daemon takes over, and the human part is gone for good.
There basically brainwashing people with the excuse of it being war.
There's... no real "in hindsight" with that.
Besides, the so-called purification/"brainwashing" process only uses food from the person's home country. I don't know about you but that sounds more like "giving a mental health patient vital medicine" to me. I may be completely incapable of concentrating and liable to assault people given the slightest provocation without my medication but that doesn't mean that the real me is a psychopath with ADD. In fact, the way I see it the difference between the "real" and "fake" personality is so subjective as to be meaningless when talking about mental issues so severe that someone, I don't know, sees all of humanity as her mortal enemy? Point being, I don't see this as brainwashing people, I see this as curing them of their Abyssalization.
