>demons look and act like humans only in order to deceive them!
>except that they also act like humans when interacting among themselves, with no human in sight

>demons don't feel or understand human emotions, they merely simulate them in order to deceive them!
>except they also emote by themselves when doing so would bring no advance whatsoever

Everyone strawmans people who don't like the demons as "People who don't like entirely evil races" when the reality is that they're poorly written.