The problem is whose perspective would be taught. For ex, what passes for typical theology of Christianity in universities nowadays is a gross misrepresentation of biblical Christianity, so teaching that could end up causing more confusion that clarification. I've noticed the same thing in other anthropology/sociology/political science type courses. I remember in college there was a big whig supposed expert on Africa, one country in particular. Then after graduation when I actually was living in that African country, that professor came through the country and was clueless and a total joke. At a minimum individuals should study the major religions from their own texts and authorities and use discernment when receiving instruction from any "experts."