This is an interesting passage. We might expect it to express Christopher's desire for uniqueness and individuality, but he doesn't actually seem too concerned with that at all. So, what else is going on here? One thing we can point out is how completely he disregards the story as being "kind and helpful," as if he can't connect with that sort of thing at all. But his real problem seems to be the notion that the name Christopher can stand for multiple things: that story, being kind and helpful, and he himself. He wants words to mean one thing and only thing only.