I personally don't see any reason why the guns should be edited out in the first place. We have these cute little animals beating the crud out of each other, but bring in violence against a human, using a human weapon, then it goes right out the door.
To answer your question, I feel that the dubbers probably don't pay a whole lot of attention to the actual names of the attacks, as sometimes they completely screw up attacks names (I can recall a few Watergun, Hydropump errors with Squirtle early on in the series). So in all honesty I just don't think it ever occured to them that these names may contain some references to the same things they are editing out.