That's because Pakistan for the longest time was reactive and did not take into account that the Indians can't make headway into Gilgit-Baltistan and Azad Kashmir so they brought their larger grounds to alleviate pressure in Kashmir by opening up fronts across the International borders of which Lahore is a prime target as well as North-South Axis near Punjab and Sindh meet. This is why activating militias is very important in the next war. Call them territorial guards that conduct work in defense in Kashmir and conduct limited offensive operations behind the front lines.
The next conflict will be very destructive and I truly hope PAF targets their financial, civilian, religious sites, media sites, family members of the ruling class (because they will deliberately target DHAs and other military infrastructure. Financial target is a must to drive out the foreign investment. The other targets would have to be hit. The Indians will target as much of Punjab as they could and will not pull their punches. They have a deep seated hatred for Punjab and 100% keep their focuses there. The Indians have decided that Pakistan has to be balkanize to clear the way for their South Asian hegemony that they seek so badly. They have sold themselves this idea that Pakistan is only able to challenage because it is an American and Chinese proxy and has to be dealth with for their greater India plans.