Who told you there is ban on Punjabi and kashmiri? Go to Karachi, you will see people speaking Balochi, Pashto, Punjabi with no issues. Similar with Kashmiri and other languages. What I was telling you is that Urdu is developed by those who are modern day Pakistanis. And you are constantly having comprehending issues.
Besides that is not the topic here. You are free to seek info by opening a new thread.
Utter Pradesh , in Pak u call them as Mohajirs, imposed their language- khari boli (mother of Urdu/Hindi) on entire Indian sub-continent.
https://en.wikipediam.org/wiki/Hindustani_language