So if you are one of those people like me that thinks on principle rather than what might be the smartest thing to do for your own benefit, what would you do in this situation?
In my Western Civ class we did have entire lecture overviews of the three big monotheist religions. However, my teacher did them from an objective point of view. From what I can tell, your teacher's attitude it seems as though he was trying to give a sermon.
I can see your problem. Two semesters ago, I corrected my Humanities 101 teacher on something (she said the Jews built the pyramids). I got an A in that class. Later in Western Civ, I corrected the teacher during a lecture on Henry VIII (for mixing up his father and brother's names). I didn't want to seem obnoxious so I didn't correct her when she said that two of his wives met their death at the guillotine.
Anyway, you could try to point this out to him on your own. I don't think it will effect your grade because he could easily be fired for that.