You are asking Islamists why do they oppose nationhood (remotely related to indian culture ) ?as per you Jamahir is not a true muslim, so why would you mind?
Anyways, this question is strictly relevant to Indians.
You are asking the wrong questions.
For them India is just Dar Al harb ,their struggle will continue till it becomes Dal Al Islam.
They simply will never understand the culture where rivers and nationhood is worshipped.
For them Islam is above Nation.