It’s a term invented and popularized by racist people to make racist policies (yes even Orwell - “Shooting an Elephant” is sus af) . There is already a term that refers to all three Abrahamic religions! By specifically excluding Islam, they are able to exclude the Arab world and all those nonwhite Muslims and make them into an Other. It’s an underpinning ethical framework for shit like the invasions of Iraq and Afghanistan, overthrowing Ghaddafi and the Muslim Brotherhood and plunging North Africa into chaos, and ethnically cleansing Palestine.