Given that my initial post was in response to a post that stated "If the system lacked the language to differentiate between slashing and piercing damage, it would be much more difficult for a DM to bring in straw golems (as an example).", no I don't think I'm splitting hairs. Both 1e and bD&D lacked said language, yet still had monsters with vulnerabilities and immunities to attacks from "slashing weapons" (something that was left to common sense to define) as well as vulnerabilities and immunities to very specific attacks (that wouldn't now fall under any codified "damage types". If we say, then, that they retroactively count as having a language to differentiate specific damage we can then also say that any game that has attacks inherently includes the language to differentiate what type of damage just by the nature of being able to define those attacks. If that's the case, then the initial post I was responding becomes unnecessary and moot.