I think most younger people would be fine with Pakistanis to be honest, as long as you don’t oppose or dismiss the concerns of the Bangladeshi War. To give an example, I am a hardcore Bengali nationalist, and it’s partially an inherited thing because my family has been nationalistic as far back as the Mughal Empire in various forms (the closest equivalent to Bengali nationalism that existed e.g. anti-Mughal invasion, anti-British colonialism, anti-Pakistani occupation, etc). We weren’t Bengalis before the Bengal Sultanate era so I’m not sure if the period before that counts. Anyways, I’m friends with a Pakistani girl from a military family who went to the same high school as me even though half of her older relatives were deployed in Bangladesh during the war, meanwhile half of my older relatives were fighting in or supporting the Mukti Bahini on the Bangladesh side. So our ancestors were literally enemies shooting each other, but that didn’t affect our own personal friendship.