Your "All Pakistanis" was just that - YOURS

No.
It was about why there was a particular issue with some British Pakistanis.
A reasom was suggested, but NOT BY ME.
To produce an explanation you would need knowledge.
I have none.

The suggested reason was that the culture gave rise to the behaviour.
Are not ALL within a culture affected by that culture.
That was my assumption.
We could debate that.