Yes. Especially migrants to Karachi, and people living in squatter communities around the super highway (this is where recent migrants are coming in), he is suggesting that they are all religiously fundamentalist and extremists.
He did not say ALL Pashtuns. And it is a well known fact that most people coming to Karachi are from places like FATA and Swat, and it is also known that most people in such places are supporters of extremism and violence.
It is a fact, and no one should argue about it.