And how is it their benefit?
Public opinion, Power? Nope, I answered this in a thread before
Relevance? Zarb-e-Azb is enough for that.
What then, why does Pakistan Army want to screw its international image up and gain nothing?
This Indian theory is extremely dumb. If PA wanted to keep bad relations with India for some imaginary gain, it would do it at a time when India is weak and Pakistan is in a good position, not the other way around.
Right now India has a good global reputation, good Public opinion and good Military readiness since IA is not busy in a counter terrorist operation. Pakistan on the other hand has a political crisis, deteriorating credibility and a military operation. It doesn't make sense to anyone except brainwashed Indians.