I don't know anything about RJ as a person, just that I enjoyed much of his book, and collected many ideas from it. I'm still using a tent (no tarp), a thick cushy pad (no 3/8" thick spliced pad), and I don't plan on cutting the tounges out of my shoes, but I am adopting things such as a blanket, hipbelt-less pack, and his way of dividing the day up amongst hiking & resting.
I have to say that I've always supported eating fresher foods. Packing things like onions, peppers, potatoes, oranges, etc. I always feel better/replenished after eating fresh foods rather than rehydrated instant rice w/freezedried chicken bits/powder & cajun mystery sauce (powder). It does weigh more, and I do eat traditional lipton type meals, but I always supplement them with the fresh veggies. I can only agree more when it comes to eating chemical food. I often have a craving for my late night bag of cheetos & diet coke, but they do nothing to quelch fatigue. They're what I would call "hollow food". I also plan to do an experiemnt substituting my mass-retail carbs (Barilla Pasta, Near East Rice, and Hungry Jack Taters) with true "Whole-Grain" versions (as RJ put it). After using his methods to dismiss breads and pasta that claim to be whole grain, I'm hoping to aquire some "good-stuff" with which to try for a weekend.
I also use hiking poles too. I find 4 legs are better than one despite what RJ says.