I came across the concept of literariness in the English course I took. The textbook (An Introduction to Literature, Criticism and Theory by Andrew Bennett and Nicholas Royle, 2016) brought it up when the authors were talking about creative fiction and how it connects to literature. They suggest that literature does not exist. Instead every work can be analysed for its literariness. This suggests that there is no specific genre for those people who are talked about in English courses. It also suggests that no work is beyond these types of discussion.
This makes sense to me as many readers do analysis all genres in similar ways to how is taught in English courses. However, attending those same classes the teachers push only one time of “genre”, or the belief that commercial fiction doesn’t deserve to be studied. Which is better than creative writing college teachers who pretend commercial fiction doesn’t exist. I think this is the wrong approach because anything that narrows focus is the wrong way to look at things. All genres bring some literariness and can provide insights to people.