The point is that the people blabbering about 'Islamisation' are the same people who don't like all non-white immigration. They don't like Hindus in saris and with red dots, they don't like white girls going out with non-white guys, and they don't like Hindu temples and curry shops any more than they like Muslim mosques or kebab shops.
This tantrum about 'Islamisation' is an outlet for racist bigots because they can't say much about other migrants, but the media has made it acceptable to be openly bigoted against Muslims.