Oh, I kind of get your point. Haha! Because it really felt that way. How do I put it though... For me, the messenger is an active character in book 2 that he deserved his own arc, and I think he was given justice in book 3. At least that's how I see it, and maybe because I am also partly a sucker for lowkey selfless characters. I have to agree though, that book 3 was such a poor attempt to connect to The Giver.