I have nothing against slang as such, but there are contexts in which it does not belong. Here is a book by one Fr. Andrew Younan entitled Metaphysics and Natural Theology. One chapter is entitled "Aristotle and the Other Guys." Another "Thomas Aquinas — A Bunch of Stuff." A third "God Stuff."
Disgusting. Either you see why or you don't. I can't argue you out of your low-rent sensibility. In matters of sensibility, argument comes too late.