Who knows, maybe knowing that your melee weapon is elementally sharpened makes you feel more confident... to the point that your hand to eye coordination is also enhanced, thus improving your aim.
Or elemental particles that disperse in the air during the process of sharpening and eventually inhaled also magically sharpen your eyesight to the point that marksmanship is improved.
Or the mere handling of an elemental stone makes your grip more firm, benefitting your accuracy.
There's many possible ways when you actually ponder it over. Or... he was simply making sure a common bug on other private servers is fixed here. :shifty: