If one reads the book "Bear Trap" where Pakistani ISI effectively utilized SAMs against the Soviet Union, we have the cart before the horse. SAMs are not to be employed defensively but offensively to get the best success rates. Unfortunately, this lesson which took us the entire Afghan war to learn, has already been forgotten.
We have here two penny nay sayers, with zero technical background talking like they know what an LRSAM is or isn't. Reality is, it would not be beyond the Pak technical base to come up with a rudimentary LRSAM system. Something that can be a trip wire against enemy ingress, the added distraction for PAF to get the upper hand.
The SAM employment we are speaking about is a completely different scenario from Syria-Israel. If I need to explain that to you, it becomes meaningless to have a conversation about it.