No, they're not. They're merely ignorant. And WHY, you ask, are they ignorant? Because they are kept that way.
In August, 2007 a professor at Quaid-i-Azam University in Islamabad, Pakistan named Pervez Hoodbhoy wrote an essay titled Science and the Islamic world—The quest for rapprochement. It is a very recommendable essay about why the Islamic world is so backwards, scientifically, when it was responsible for a scientific Golden Age between the 9th and the 13th century and basically carried the torch of intellectualism through Europe's Dark Ages.
You should read that essay if you have time, it's great. But a couple of the things he said hit me right in the gut when applied to my experience as a Witness:
The scientific method is alien to traditional, unreformed religious thought. Only the exceptional individual is able to exercise such a mindset in a society in which absolute authority comes from above, questions are asked only with difficulty, the penalties for disbelief are severe, the intellect is denigrated, and a certainty exists that all answers are already known and must only be discovered.
Sent shivers down my spine. And:
If Muslim societies are to develop technology instead of just using it, the ruthlessly competitive global marketplace will insist on not only high skill levels but also intense social work habits. The latter are not easily reconcilable with religious demands made on a fully observant Muslim's time, energy, and mental concentration: The faithful must participate in five daily congregational prayers, endure a month of fasting that taxes the body, recite daily from the Qur'an, and more. Although such duties orient believers admirably well toward success in the life hereafter, they make worldly success less likely.
It's the same complaint many have about Witnesses: when one is ridiculously busy with religious pursuits, one has no time for anything else, including rational thought.
People of every religious stripe but especially those entrapped in fundamentalist systems are all dealing with the same problems.