The crux of the issue is that there are people who tolerate the existence of their post colonial state crushing entire communities with fake borders and there are people who recognize it is unsustainable. I value the communities and people of Pakistan over the existence of a parasitical state.
Pakistan is the last bit of Izzah left to the legacy of the Muslims of the subcontinent. Look at the humiliation of the muslims of hind that is currently happening at the hands of the fascists in India, that could have been the fate of the Punjabi Muslim or the Sindhi and others.
A last bit of trans-ethnic unity, a higher purpose. Without it its just a bunch of broken states, weak and divided, waiting to be absorbed and subjugated and made subservient to the Hindutwa order of the subcontinent.
My only regret in looking towards Pakistan is that it failed to prioritise and take direct action on the matter of Kashmir, and took half measures, whereas the Indians took full measures on matters regarding Hyderabad and Junagadh. Jinnah for some delusional reason though he could incorporate Hyderabad into Pakistan, and that the Indians would somehow accept it. They wasted time there and sent proxies to try to take Kashmir rather than a direct attempt as what India did with the princely states.
If it was me, i would have directly tried to annex Kashmir, secure water routes, when India made a move on Hyderabad and tried to consolidate the Princly states, and then built alliances with the Khalistan movement, and agitaged for a Punjabi Sikh state in Punjab, and placed it as a buffer between Pakistan and Haryana. But alas, Hindsight is 20/20 as they say.
There have been many mistakes made by Pakistan, IMO its still currently making many, but you have to admire its tenacity and refusal to give up.