No
We don’t have a word for what he is yet. But he’s not a nutter. There perfectly harmless quite likeable nutters pondering about the place doing no harm who’s good nuttery name’s you are damaging by implying they are similar.
I imagine the reason he’s all cross is the book World War Z (if you haven’t read it, read it, drop what you’re doing right now – go out into the street, find it buy it read it), is considered by some as an alagory for Climate Change, its also about fear, ignorance, our will to beleive what is convenient. It is in short one a finest books about the walking dead, and is therefore about humanity. Something which as I understand it terrifies Jones to his core.