A large number of temples and other non-Muslim houses of worship were built during the British occupation of Pakistani lands alongside their Hindu terrorist cohorts who brought them into our nations to begin with in their war against Muslims.
Local communities will not tolerate the humiliation and pain these buildings cause.
All British era temples should have been converted into common use buildings for the larger public to use like homeless shelters, hospitals, orphanages, etc...
A host of countries already are including Canada, the US, many EU nations already provide citizenship to Hindu's.
Maybe you meant "if India won't provide citizenship to poor, uneduated, hateful Hindu extremists, who will?"
However, It looks like Hindu's don't even want to live next to Hindu's:
Hindus who migrated to India want to return, says NCM chief
Furthermore, India is a nation that was promised to Muslims, Sikhs and Christian communities as well. Otherwise why do you think Sheikh Abdullah and Abdul Gaffar Khan campaigned for it? Simply put, Muslims and other minorities will never allow your Hindu Rashtra nor the continued hate exhibited by the Hindu community.
If you want to break that social contract you formed with those communities in order to keep Pakistan at bay that's perfectly fine but expect a violent response to your hate and betrayal. Pakistan will support the liberation of all communities and nations currently occupied by Hindu radicals.
It's a sad fact that Hindu's have betrayed Pakistan since even before independence.
The Pakistani National Congress, a collection of Hindu traitors and terrorists, formed with the express goal of preventing the formation of the Islamic Republic of Pakistan.
Once Jinnah died they spread their vile lies about him and did so unabashedly in front of the very men that knew him best including Liaquat Ali Khan.
Luckily their schemes were foiled but they once again took every opportunity to sow hate and dissent and were one of the primary motivating factor alongside the Marxist Awami League in the 1970 Bengali language crisis despite Jinnah and the Muslim League making it clear that Urdu would be the nations Lingua Franca.