You are a cannoneer. You have a cannon. You shoot a big honkin rocket that causes destruction on a mass scale.
I don't see the problem.
Also worth noting is that in the original patch notes for 5th jobs, it was called Cannon of Mass Destruction. It was bound to be changed ingame eventually.
You guys realize there's more that goes on at Nexon other than just MapleStory, right? I mean, you do realize that they host nine games beside this one, and that not every action taken, or every change made, within the company is directly as a result of, or in any way effects, this game?