It's the 'standard term used' so makes sense that it is used. The discussion here is does it make sense? I know that until I studied Persian history it very much alienated my thinking from that part of the world, and made me think of them as other. I was also taught the ignorance of christian thought of that period (referring to mainly the actions of Germanic groups) versus the superior enlightened 'Islamic Golden Age' that happened to leave out that many of those enlightened scholars were Christian and that their thinking was perfectly compatible with Christianity. It seems artificially divide and NOT do a pretty poor job accurately reflecting the people/scholars/scientific movement it is used to describe.