It's a dangerous thing, as the aphorism goes. But isn't it preferable to total ignorance?
One of my good friends has recently been exposed, I think, to Orientalist criticism of Saheeh al-Bukhari, and unfortunately it's begin to injure her faith. I don't really like to see Muslims trying to meld traditional views of Islam with Western views--especially when they give precedence to the Western side of the equation. In fact, it's something I've had to fight with as a convert--that sometimes my own cultural views have colored the way I saw Islam.
For instance, it's easy sometimes to bash Arabs or Desis for a cultural more than strictly religious understanding of Islam, but Americans have similar problems. We have a cultural lens as well, and sometimes that does us more harm than good when trying to really understand Islam.
And this perspective which could be cultural or Western or just related to the present times presents a person with a particular set of biases. So when he looks at Islam--or specifically, when he looks at the Prophet (saws) who lived in a different time and place, in a different cultural milieu, he might see some violations of our modern/western ideals that would trouble him. Or, I could say they would trouble him because he assumes that modern society is more civilized, more knowledgeable, and more ethical, etc.
So when he begins to start reading hadith--especially but not necessarily from Western critics--without any sort of commentary or explanation, without any background on the biography of Muhammad, without any kind of background knowledge on the culture of the time, it's easy to assume (unfortunately, and inaccurately in my opinion) that the Prophet (saws) acted in the horrible and atrocious ways that Islamophobes prefer to believe.
I'm sad that such criticism even exists, which refers to the Messenger of Allah (saws) as being a pervert, a racist, a misogynist, a pedophile, a rapist, an overall evil man who massacred Jews (or anyone else in his way.) But what really troubles me, more than the existence of such offensive claims, is when a Muslim might be led to actually believe it, due simply to inadequate basic understanding of the subject at all.
Hanging around on boards like the Catholic Answers Forum has shown me plenty of ahadith which are taken to illustrate the Prophet (saws) in a poor light--I doubt that anyone could surprise me with something new. But I suppose for someone seeing these things for the first time. I won't say that I understand them all, or that I could explain them. But what can I do, or what can anyone do, to help prevent Muslims from falling into this trap? When their own sources and pre-existing biases are used against them?