Ultimately, every individual reader I suppose. But don’t be obtuse, when you pick up a book I think you know if it’s just a fun read or if you’re expecting it to be something more. Either due to a particular person’s opinion, or the opinion of society in general.

If someone is reading something they would like to appreciate as art, as opposed to entertainment, I don’t think it’s out of bounds to suggest they might enjoy it more if they waited until they mastered the language enough to appreciate the prose.