Well, Christianity evolved from a number of cults in the region, including an Egyptian Sun cult (Son of God and all that) and a fish cult (fishhead, prominince of fishes in the New Testament, etc).  So yes, the cult origins of Christianity should be included.  I don't know much about the origins of Judaism, ie how much was taken from cults and how much was original, but I do know they incorporate a good deal of what was around them into it as well.  If it is not true that Islam evolved in part from a Moon cult, then it should be at least mentioned in the article that it is a topic of controversy, and that some believe it did, while others it did not.  We can't let the fear of PC stomp out the search for truth. 
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