But doesn't Harry accept that he has more than one "voice"? So if he's truly a rationalist, wouldn't he rationally gather evidence based on how people acted and his own voices, and after these observations, look at how complex people can be? Yes, Hermione doesn't think that he sees other people in that way, but he must, because he cares what Hermione and Draco think, and he goes to Prof. Quirrell for help and advice, doesn't he?

I agree about the interesting narrative. It does make it more complex and quite a bit more real. (I don't know about you, but it's similar to how I think/have inner doubt.) Much better than "feeling conflicted".