FrogReaver
The most respectful and polite poster ever
Aren't damage types meant to correlate to the fiction? Eg if something does piercing damage that means it is a threat primarily because it can stab you. If it does fire damage that means that it is a threat primarily because it can burn you. Etc.
If someone wrote up a description of a club that does piercing damage, or a refrigerator trap that inflicts fire damage, I don't know if that would literally count as a rules violation but it would clearly show the person doesn't understand the function of damage types in the game. Their function is not limited to triggering resistance and vulnerability.
You don’t need a mechanic to fictionally tell you that arrows pierce clubs bludgeon and swords slash.