Ok, tell me how someone using the english language will be able to communicate that the damage die for the weapon increases by one step without using those words and not covering the "language" you quoted above.
Ok, now that that useless effort is over, perhaps they should simply say any and all increases to the weapons die type is covered by this rule and leave out any references to size to avoid confusion.
Could be clearer.
They do say "effective size increases" which means the size didn't increase but the damage die did. At least to me it does. This language covers things like this evolution die increase.
I agree...but if that does, why the superfluous reference to increases in size? Why not just use all increases or decreases to die type of the weapon and leave it at that?