"Phobia", as defined by dictionary.com, states that it is " a persistent, irrational fear of a specific object, activity, or situation that leads to a compelling desire to avoid it."
If, theoretically, me posting, creating, drawing, sharing, etc a picture of the so-called Prophet Mohamed will result in someone of the Muslim religion being willing to physically harm or possibly even kill me for something so innocuous, it no longer becomes a phobia as my fear would not be irrational.
One of the many, many reasons that makes North America as great as it is are the liberal values held by the vast majority of people, including the right speak your mind and to criticize virtually everything. A right that the greatest of people, such as Ayaan Hirsi Ali, along with the lowest common denominators, such as Richard Spencer, David Duke or Reza Aslan to name a few, are afforded. Removing that right to speak openly about and against a religion that is plagued with problems, especially towards women, homosexuals and Jews, is nothing short of censorship and a step closer towards a totalitarianism state.