Just a thought—probably nothing new—probably not my own, but in ruling out expressivism, we seem to be perpetuating the creative/expository (or academic, essay, etc.) writing split.
I thought this yesterday. And it mostly seemed worth noting because of the way it sits, uneasily, with me. I'm sensing a potential expressivist revival, and I need to explore my own discomfort with this. This comes after reading this yesterday.