The idea of the post, is not for those, such as yourself apparently, who are already in shape. Rather, it was written for those who are in different stages of trying to get into shape.
You're essentially arguing that quality of workout is more important than the quantity. I agree, but I think most people, including yourself probably block out a certain quantity of time -- by 35 minutes I suspect you mean the actual minutes you are working out. Great, but perhaps for others there are certain steps involved -- commute, warm-up, cool-down, stretch, et. al