I don't think I disagree with a lot of the video, I mean all it is just theorizing and it looks good on paper, however Indians thought they'd be breakfasting in Lahore last time too, it didn't go as well as they planned though.
What this also doesn't take in to account is that there are tens of millions of armed Pakistanis, from the tribal areas on the west, to western Punjab, down to interior Sindh and Baluchistan. If there was a full on ground invasion of Pakistan, it is likely that Pakistan Army will be reinforced by millions of these armed people.
We won't invade India anyway, apart from the Kashmir region. So all across most of the front, it will be Pakistan defending, which gives it an automatic advantage anyway. If Pakistan Army's conventional strength goes in to defending the southern areas and stopping the invasion there, Kashmir may get flooded by millions of armed civilian fighters.