Thanks for your comments, jdf. I realize now that I also make the distinction between artists and craftsmen, though I've never spoken it. I know and admire several photographic artists that abuse every rule of traditional landscape-style photography (poor or discordant focus and composition, cross processing, color negative push, bizzare post processing) and still turn out very good, interesting, and sometimes puzzling work. My essay was written from the craftsmen's point of view, dealing with the act of creating great landscape photographs, not new or unique ones.
In other words, my essay is written for and about photographers who do not dress in black.