The unwieldy title of this [1] FrontPage piece by Cinnamon Stillwell is necessitated by the fact that a significant number of the people that she cites in this useful resume of voices for moderation within Islam are actually non-Muslims and ex-Muslims.

Now why might that be?

(Postscript: The title still doesn't get it right, as Ibn Warraq, who is discussed at length in the piece, is neither a moderate Muslim nor an Arab. But such is the difficulty created by the fact that there are very few genuine moderates who continue to identify themselves as Muslims.)