I would disagree that his personal style makes Stephen King a poor writer. By adhering to an overly rigid structure for literature, you run the risk of sacrificing creativity for form. While form has a place in things like sonnets and waka, one of my absolute favorite writers, Samuel R Delany, tossed the style book out the window when he wrote some of his most amazing works. "Dhalgren" can still leave me breathless, and "Stars in My Pocket Like Grains of Sand" is sheer gorgeousness.
On the other hand, the relentless predictability of Barbara Cartlandt is what gave romance writing such a bad name.