So, I've been messing around with different builds and started playing around with possible monk builds. There is a feat (ancestral weaponry) for the monk that, if you have the monastic weaponry feat, you can make racial weapons monk weapons.
Because there is a general feat for weapon proficiency, and most other races have a feat for racial weapons, it sort of feels like the universal nature of the human should make their Unconventional Weapon feat their racial feat. I can see how this might be considered a stretch, but I also feel like it plays well into the idea that humans are everywhere and get adopted into everything (or that everything gets adopted into them), so I don't feel like this would be unreasonable. However, I can't find anything in writing to suggest that a weapon proficiency gained through the human feat would make it such.