Should someone be an Islamophobe? Absolutely. It is immoral to not be an Islamophobe (i.e., one who loathes Islam, and fears for its impact on humanity).
Here are some reasons why:
Do you imagine yourself as one who would have spoken up against Hitler in Nazi Germany? Or do you loathe those who stayed silent during that time?
If so - you have a chance, in modern times, to speak up against a wicked system started by an evil man, Muhammad, which is causing active harm to millions of people in the world. Spread this information on what Muhammad taught. Refuse to be silent for fear of being labelled a racist (Islam is not a race), or an "Islamophobe". These are lazy attempts by those who would defend these wicked actions to shut down criticism. Refuse to be silent. Do not let people shout you down. Truth is on our side, and the facts of history are on our side.