Well, it's part of the broader discussions of writing craft, from basics like "says is invisible - only use other words for occasional emphasis" to discussions of points of view (universal omniscient third persona narrator, over-the-shoulder narration versus eye-in-the-sky narration) and how to present truly alien points of view without losing the sympathy/understanding of the reader. Some of these are identical/very similar to other genres and others are particular to SFF. I've heard these discussed by critics, fans and writers at "preocess" oriented panels at conventions, too, though most of the fan audience for those kinds of panels are aspiring writers, too. Hell, large parts of (lit SF) fandom have some vague dream of writing at some point, though most never do the serious work required - I have both the vague desire and the lack of time (or committment, perhaps) to follow through, for example.