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It's easy to say someone is wrong because they don't reach the same conclusion as you. The text book he references is 539 pages. He did get the ISBN number wrong.
At the beginning of Section 2 he references a couple of papers from the SAE defining the factors in RR, of which 90% is due to material hysteresis. Sidewall stiffness contributes to hysteresis inversely. Shorter sidewalls are stiffer. Less sidewall = lower hysteresis. Any disagreement here?
I was speaking more of a theoretical nature. As I noted in my posts it would be tricky to achieve this. I referenced the tires/wheels on supermileage racers as the ideal, not as a practical solution for daily drivers.
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