Given the call for a die roll, I think the intent was an exercise in attempting to describe a culture in terms of the rolled class, not actually selecting the one(s) best for HN. Either just for fun, or as an attempt to claim that the whole thing is just tea-leaf-reading and you can claim anything is "high" or "low".

(HN is mostly Prole-and-proud and, especially, Middle-who-erroneously-think-they're-Upper-Middle-because-they-can-afford-expensive-hiking-clothes, with some actual Upper-Middle but not that many—most of the Upper Middles in tech are in more people-person roles, if not ownership or management, than pure technical ones, even if they have some kind of tech background, or sometimes are in the more academic wing of tech)