This is a world of psychological warfare. If you don't make your exploits public then it never happened.
Those who need to know and make the decisions that will give more strength to separatist movements in Pakistan know what's the ground situation.
What we discuss on the Internet, especially in English, doesn't actually reach the Pakistani awaam. So the regular awaam can be lied to easily anyway. But then even the most ignorant awaam in Pakistan knows about the F-16. And we have already seen the country's morale dip when they lost those P-3s and Erieyes to terrorists.
As for separatists, the information blackout is very much in our favour right now. We attack Pakistan with impunity, and they deny every single attack that ever took place, so we can continue hitting them whenever we want and actually reduce their battle strength on the ground. When PA does not disclose casualties, that means separatists can not only attack Pakistan and whittle them down, but they can also make up stories about having greater victories than what's been achieved, which helps in getting more funds and recruits.
But if PA starts announcing casualties, then separatists will lose their propaganda advantage and we lose our ability to continue hitting Pakistan without repercussions. You see, if the awaam realise what's going on, at first they will lose morale, but then PA propaganda will ensure the awaam continues supporting the PA anyway. It's not like they have a choice where they can wish away the PA and replace it with something else. The PA will then only end up with a bit more pressure to retaliate to any attacks from India. This "breaking the will of the people" concept doesn't work.
Another big advantage with this is fauji families and terrorist families being notified about the death of their sons but no recognition of their sacrifice. This will directly hit the morale of those who are fighting. Did you forget that PA had to decorate soldiers during Kargil War even after claiming they weren't involved? It's not easy to hide death. And the PA is doing us a favour as the IA is increasing the body count without any real repercussions. Once the body count reaches a certain point, their house of cards will tumble.
So have patience, the Pakistanis will themselves reveal information on their own. Our goal is to break the will of the leadership.