Contingency fuel
I take your point, but you shouldn't have to look for ways to increase your fuel burn in order for the a/c to land within limits. In a lot of situations it is not practical to do, and it certainly is not professional from an aviation point of view. Also, in this situation, as the loadsheet speaks the truth, the Capt wont sign it as it shows an overweight landing. So the loadmaster then has to falsely increase the fuel burn in order to reduce the landing weight, to give the appearance on paper that the a/c is arriving within limits, but in reality it is still landing at the MLW plus the weight of the contingency fuel. Three things have happened here: 1. The a/c has been operated illegally, 2. The loadmaster has falsified an official aviation document. 3. The Capt has signed a falsified document.
If there was an accident and these issues came to light, where would the company stand from an insurance point of view ?