To me it seems you've underlined my point. As someone who is now extolling the virtues of directness, he could have done a lot better than a few folksy metaphors with a book titled 'On Writing'. Contrast it with a real book on writing like Ursula K LeGuin's Steering the Craft (http://www.amazon.com/Steering-Craft-Exercises-Discussions-N...)
Honestly I think the guy writes whatever he pleases because he knows he's got a permanent fan base. But thanks for your note; I will finish reading the second half.
The advice therein extends beyond stories.
http://www.amazon.com/Steering-Craft-Exercises-Discussions-N...