The Islamophobia propaganda machine has its roots in years of concerted online, media and marketing campaigns. This well oiled machine of hate has attracted many followers, and they can be broken up into several groups (there may be considerable overlap):
1.) Those who were ripe for the picking. These individuals already had a hate for Islam and Muslims or Arabs, they were already racist in one way or another, and easily attached themselves to Islamophobia.
Islam is a religion composed of many races/ethnicity, the term racist doesn't apply here. Not all "islamophobes" hate Arabs.
2.) Opportunists. These individuals are always looking for a way to make a buck, to line their pockets. Real, honest work doesn’t suit their tastes and so they’ve devoted themselves to that centuries old money-maker, hate.
Or they are honest researchers.
3.) True believers. They may come from various ends of the ideological spectrum, most of them are very afraid, fear courses through their every waking moment, they are made even more afraid by modern interpretations of say Biblical prophecies, or fears about the existential threat of the end of Western society.
I'll give you this one, but it also applies to Muslims. Interpretations about Dajjal comes to mind.
4.) The gullible or the naive. These individuals read and believe the Islamophobic propaganda because they perceive the arguments as objective, factual, honest, and fitting with their worldview, or answering their confusion and incomprehension of world events or history.
Same about the people who
convert revert to Islam. And who believe the whitewashed history.
You know what annoys me? Muslims decry western imperialism and the crusades (which where an answer to Muslim conquests), but laud the Caliphate, and the Ottoman Empire. They pride themselves for their tolerance towards Christians and Jews, but always fail to mention that it was not extended to pagans/heathens. For the choice was convert, death, or slavery. Or how they converted Persia (Iran) by force, because they where "worshiping fire". Or how many girls were kidnapped for the harems or Sultans, and viziers. They also fail to mention that slave trade continued long after it was banned in other places.
As far as inventions go...Algebra? A closer look reveals that it has older roots than Islamic scholars. Arabic numerals, has anyone checked Indian numerals?
Dishonesty or Double-think?