The friend making that observation is actually a well-educated person, but obviously had bought in to the propaganda put forth by "peaceful muslims" and their apologists. This was a perfect example of the ignorance of fundamental (not radical) islamic doctrine exhibited by so many westerners. In actuality, there's nothing new about islamic barbarism, and civilized men have recognized it for years.
One of the most learned philsophers in history, St Thomas Aquinas, writing his Summa Contra Gentiles as early as 1259, recognized the truth about Mohammed, his teaching, and his followers.
"He (Mohammed) seduced the people by promises of carnal pleasure to which the concupiscence of the flesh urges us. His teaching also contained precepts that were in conformity with his promises, and he gave free rein to carnal pleasure. In all this, as is not unexpected; he was obeyed by carnal men. As for proofs of the truth of his doctrine, he brought forward only such as could be grasped by the natural ability of anyone with a very modest wisdom. Indeed, the truths that he taught he mingled with many fables and with doctrines of the greatest falsity.
He did not bring forth any signs produced in a supernatural way, which alone fittingly gives witness to divine inspiration; for a visible action that can be only divine reveals an invisibly inspired teacher of truth. On the Contrary, Mohammed said that he was sent in the power of his arms - which are signs not lacking even to robbers and tyrants. What is more, no wise men, men trained in things divine and human, believed in him from the beginning. Those who believed in him were brutal men and desert wanderers, utterly ignorant of all divine teaching, through whose numbers Mohammed forced others to become his follower's by the violence of his arms. Nor do divine pronouncements on part of preceding prophets offer him any witness. On the contrary, he perverts almost all the testimony of the Old and the New Testaments by making them into a fabrication of his own, as can be seen by anyone who examines his law. It was, therefore, a shrewd decision on his part to forbid his followers to read the Old and New Testaments, lest these books convict him of falsity. It is thus clear that those who place faith in his words believe foolishly."
Until the world recognizes the truth about islamic teaching, civilized man will not be safe from its evil influence. It's true that not all muslims will commit acts of jihad. They have though, if even through ignorance, professed their faith in an ideology that condones, and commands, the killing of non-muslims in the name of "faith." Such teaching is anathema to civilized society.
Recognizing the truth is not "phobia" but survival.