Thinking some more, I do think this chapter is really good. Aya didn’t die as punishment for being too murderous, she simply forgot her training and ended up getting herself killed before she could reach her potential and kill ten times as many as she did here.
It’s not something that acts like morals are the divine arbiter of who lives and dies, yet it also doesn’t act like morals are bad and make you a worse soldier because you can’t “do what needs to be done” regardless of if the worst action actually needs to be done.