I was told by a cross person on Twitter that the booing is an issue of humour amongst IndoPak diaspora...
I am sure it was intended that way. There was a lot of booing, sledging between fans of both teams when I went to watch Ind vs Pak at Edgbaston.
The fact that Bopara, Patel have not openly made any comments or statements about it may suggest, they see it as banter as well.
You are absolutely correct in your reply to the twitter person by the way.
What baffles me is the ignorance, India was not playing Pakistan, Moen Ali is not Pakistani. Ind Vs Pak banter should be left for appropriate games.