Well Ripwise, I do not like the Golden Tomahawk or Howdah's Pistol, and I am attacked by them nearly everyday. I think they are bad for the game, but not on the same level as Geronimo's Shotgun.
I do have a golden dueling weapon which is pretty solid and fairly easy to obtain. Golden Tomahawk or Howdah's Pistol will give you a bonus of 25 damage over my golden dueling weapons. I can bridge that gap with a buff. Geronimo's Shotgun however gives you +100 advantage, no buff can match that difference.
It doesn't matter that it is only one world affected, something this unfair needs to be balanced.
If you have a cyclist caught doping, you don't let them continue because it is only one. You stop the doping, strip the cyclist of his medals, and balance the playing field. (I promise not to use any more bad analogies)