I...don't understand the problem? This is part of the Netflix strategy to offer local content. The show is meant for Indian audiences. Don't tell me you haven't seen tons of American and British spy movies doing pretty much the same chest-thumping nationalism thing. And I don't think the assertions you make are justified from the trailer. It shows that there are terrorists in Pakistan, not that all Pakistani muslims are terrorists. And it's known that Pakistan has a serious terrorism problem. I mean, Osama Bin Laden was found a kilometer away from Pakistan Military Academy.
Any claims of islamophobia seem suspect, as it's based on a book written by a muslim author and produced by Shahrukh Khan, a muslim Indian actor. As for any claims against Pakistan, well, Pakistan was placed by FATF in its black list today for not taking any concrete steps to root out terrorism in its territory. I'm not trying to take sides here. The current Indian govt is pretty terrifying too. I'm just saying that the feelings expressed by the OP seem to be stemming from jingoism and misplaced nationalism rather than any objective standpoint.
Oh, and let me just say, that was a terrible trailer. Makes me think the show is going to be a huge flop. Bad dialogue, bland scenes, ugh.
