Punjabis are the biggest supporters and adopters of Urdu in Pakistan. This guy is definitely an outlier.
From large cities to small towns, Punjabi parents have been actively replacing Punjabi with Urdu and as such if an unbiased census is carried out then a majority of Punjabis (and therefore Pakistanis) would call Urdu their mother tongue.
As a Punjabi, I am proud of the fact that Punjab has played this part in adaption of the national language. This new-age BS propaganda trying to awake this non-existent "Punjabiyat" in us is not going to work. We are Pakistanis first and then anything else.
Edit: just to add more salt to wounds of ethno-nationalists and some out of touch fellow countrymen.. the generations of Punjabis, Pushtoons and Kashmiris that grew up in urban areas in Pakistan is virtually indistinguishable. Their identity is Pakistan first and they fiercely defend it. Their language in offices, markets, schools is Urdu mainly, mixed with some English words. An identity has evolved which will continue to strengthen and this identity will ultimately truly define what a Pakistani is.