INPs, eh?
Ne is the cause of the weirdness. It's random ideas, tangents, contexts are seen as weirdest. Ne in fact, has a drive for new ideas, for uniqueness. No other function can compete. Yet ENPs are not seen as the weirdest. Perhaps because pure Ne is more random than weird. The primary Ji of INPs takes the information Ne provides, and develops them tremendously. Rather than just being random ideas of dubious quality, the Ji takes the best of those, and works them further into something truly "weird". Ne provides the drive for uniqueness, and Ji provides the full understanding of it, thus INPs become the weirdest.
imo