Pope Urban II set the tone for a millennium-long identification of Muslims as direct enemies of Western values, culture and morals. Western culture was good, pure, logical, virtuous, orderly. Islam was bad, polluted, senseless and violent.
The prophets wanted their followers to believe in God and follow His Word. It’s true that some adherents to these religions do better than others in following their scriptures; they range from virtuous to considerably-less-than-perfect, but the vast majority fall short of putting a scarlet mark on their creed.