I don't understand what you are asking. They add the weight to the tour bikes, not to the ones they sell. If some guy passes you on that bike, you can assume it doesn't have the added weight. However it probably doesn't have all the other light crap that made it underweight in the first place.
My questions were rhetorical, intended to provoke a conversation about what I see as an absurd pursuit of weight reduction for the pure sake of it and at a cost that only benefits the sellers of bicycles.