Are you still in doubt?
Then you need to learn the hierarchy of victories. First, it was that Partition was a victory. It then became apparent that it was not, so it was retained as a reservoir of self-pity, and the narrative shifted to Kashmir. This second part was that Kashmir was won from India by soldierly struggle; not a whisper of what happened in Rajauri or in Baramula, since that is all absolved by the passage of time, and in any case, old Col. What About is always ready with a rescue mission. Then the loss of the bulk of Kashmir began to hurt; so, in turn, the conquest of Kashmir went into the self-pity locker, and the victory of the Chinese came out as a prime mover of patriotism. Unfortunately, as is true even today, vicarious satisfaction does not go very far; something more direct and gripping of the imagination had to take its place, and a vehicle was soon found. The 1965 conflict is officially a Pakistani victory; it was entirely imagined, developed, implemented and lost by native talent, with no outside involvement other than planes from Iran and Jordan brought in to make up the numbers. Of course, the Battle of Chawinda was the pivotal engagement, overshadowing even the self-goal of removing the architect of Grand Slam in mid-battle; not our phrase, not our terminology, this is the reason why even a patriotic Pakistani purses his lips and shakes his head. Khem Karan simply does not fit into this narrative, and is buried as far down as the spade can dig. So from a country-wide engagement and triumphant denouement to a state-wide engagement and its dubious outcome, to a war fought over a part of that state that suddenly flared up into something unexpected, the tale continues. Kargil is a way station; today's narrative is the conclusive destruction of the IAF by its loss of a MiG21 Bison and a young officer who was captured and returned without eyes gouged out or any other kind of bodily harm.
Expect to hear cries of triumph in the future as ATGMs are used on bunkers, and other similar famous victories. Meanwhile, just to keep their strategic vision keen, there will be these scenarios predicting a victory in one week/one fortnight/one month (the duration is directly proportionate to the military experience of the proponent; the script-kiddies are confident of victory in a day or two).
Personally, I wouldn't waste my time being thunderstruck at the temerity of a member body that denies every fact, every occurrence, every outcome, in spite of, or perhaps all the more stoutly because it has been corroborated by its own country experts and analysts.
Your astonishment is naive.