I don't know how often it happens regarding other religions, but when non-Muslims study (or, more correctly speaking, usually just feed their hatred) about Islam they almost always cite books written by non-Muslims and most often westerners.
These writers may be Christian or they may be atheists, but why would anyone do that and expect to "find the truth"? Why would they cite those books to Muslims who have actually been to a Muslim country and who have studied the Qur'an and who know Arabic, and expect their citation is somehow valuable because it's supposedly objective?
Is there a reason to imagine it to be objective?
Have you noticed this phenomenon in discussions about other religions?
These writers may be Christian or they may be atheists, but why would anyone do that and expect to "find the truth"? Why would they cite those books to Muslims who have actually been to a Muslim country and who have studied the Qur'an and who know Arabic, and expect their citation is somehow valuable because it's supposedly objective?
Is there a reason to imagine it to be objective?
Have you noticed this phenomenon in discussions about other religions?