I, okay, good to know.I do not personally "weigh in" on anything. The opinion you describe is Harry's. Were I the one making the choice for him, I certainly wouldn't trust anyone enough to share my secrets. Harry feels bad at the prospect of keeping Neville in the dark, however. Whether this is Neville manipulating your sympathy or Harry being naive is up to intepretation.
The crux of the matter is that any opinion expressed in the voting prompt itself is going to be given an undue amount of weight, especially if it's negative. Whether it's you, or "the narrator" or Harry himself, doesn't really matter. Especially since I'm likely not the only one being mistaken on who's writing the voting prompts.