I visit Josh's site each and every day. His logic on the best parks to visit is based on common sense and will rarely, if ever, lead you astray.
We have a 10 day hopper in October and plan on hitting his most recommended park at rope drop on 9 of those mornings (the other is a recommended park, but not the 'most' because we did not want to hit rope drop at HS three times) . After an afternoon break we will hop to a different park for evening entertainment. We're less concerned about crowds in the evening and primarily focus on attractions or events that don't have actual queues (shows, parades, fireworks, concerts, etc.).
The problem I see is too many people are discovering him. One thing where we do differ from his plan is taking advantage of Evening Extra Magic Hours at Magic Kingdom. In October, you almost have to do that to see MK at night because the park closes early so many other days.
Once at his most recommended park in the morning, we follow his basic premise about hitting certain major attractions first, but refrain from walking across the park just to make it happen. For example, we won't immediately leave Toy Story and run over to RNR and TOT, then rush to Star Tours. The fact those rides are spread out just means we do two rope drops at that park. Same thing with Epcot when planning Soarin and Test Track. Another thing is his touring plans 'skip' a lot of our favorites. We simply build those into the plan by not riding things multiple times.