Pakistan would be more peaceful if it was divided into countries with ethnic borders
Why does the subcontinent force itself to live with colonial borders that cause their people to clash? Its not racist or against Islam to be able to see these British borders that divide our ethnic groups aren't good for us. I can see why it would be hard to implement new borders now but we can atleast admit these borders don't work for us. Some punjabis in india and some in pakistan, some pashtuns in Afghanistan and some in pakistan, some Kashmiris in india and some in pakistan. Historically we kept within our ethnic groups so it's not surprising why theres a power imbalance when punjabis are 50% of this new country.
Europe fought wars for decades to come to their current borders, it's not as simple as dividing based on religion. In France, Italy, Portugal, Germany, Poland over 90% of people speak their national language and belong to the same ethnic group. The 19th century 'nation-state concept' carved out these countries and was the idea that every distinct ethnic group deserved its own self governing political territory (state). Now they have the EU which is basically an alliance between these self governing ethnic nations. I believe this movement is exactly what made Europe successful and put an end to their wars among themselves. Pashtuns/Durrani Empire and Punjabis/Sikh empire fought many wars with each other less than 200 years ago. Afghanistan has the same problem of most of the country being one group (Pashtun) and I believe ethnic borders would solve most of their issues too. Divide and rule is to divide ethnic groups and force them to live with different ones they clash with, and anyone defending the concept of Pakistans borders is literally supporting the British's tactic to keep the subcontinent in constant hell.
I think theres a direct correlation between ethnic groups in a country not getting along and the development of a country. Highly homogenous countries can still be welcoming to foreigners btw, but one ethnic group dominating the percentage helps in making sure every area of the country is equally represented and developed unlike in countries like Pakistan.