Perfectly put. As can only be done by a Hindu who has seen the other side closely. As I have.
Pakistan bears the cross (pardon the pun) of the failure of the entire subcontinental populace to convert en masse. In spite of some of the worst most barbaric bigots and a thousand odd years of strife and attempts to do the same, Bharatvarsh remained predominantly Hindu.
While to the west, population after population, civilization after civilization folded. To the north, the story is the same (all the tajik, uzbek etc central asian muslim lands). To the east too the story was the same. Malysia, Indonesia etc.
The old Asian civilizations resisted, with their deep roots. India. China. The Japanese and Koreans. The Russians. The European pushback.
But if there is one big blot, one big thorn of discontinuity for Islam to claim an uninterrupted swathe of continental dominance all the way from Turkey down to sub saharan Africa to the middle east all the way to south east Asia, it is the continent of Akhand Bharat.
That is what Pakistan represents to the rest of the Muslim world. And that is the source of their continuing angst.
Right now they are in a fight for survival, for consolidation of the gains (their 1000-year consolation prize) they made in 47.
If we let them off the hook now, they will not stop till they redeem themselves in the eyes of their Ummah.