Evolution is a science, and is studied by a number of different fields of science. Science works with both facts and theories. Facts are observations. Theories explain those observations. Sciences are defined by adherence to the scientific method.
I do notice that you haven’t commented on why evolutionists insist that only evolution be taught in philosophy classes and not creationism — why?
I don't see any use in teaching evolution in philosophy class. Evolution is a science, and relies on the scientific method; both are beyond their field of expertise.
As for teaching creationism--it depends on how it is taught. If it is examined as one of a number of worldwide religious beliefs, subject to "critical analysis" (I love that phrase), then it would be appropriate. If creationism is taught as "God's TRVTH and you better believe it or you'll roast in hell" then that is preaching, and not appropriate.
And YEC, if studied at all, should be studied in abnormal psychology classes. How YECs can ignore and deny the vast amounts of information that contradicts their beliefs is definitely worth study.