Hi there. I understand your view, but I was trying to think about it in a way which negates the goal at hand (if possible).
For example, lets say that, regardless of whether you are bulking, maintaing or cutting, you need to get in 3000 cals in the day. Lets say that the PWO shake is 500 cals. If you simply leave that out you get 2500 cals.
My question would be: if you do cardio on that day, would you still keep it at 2500 cals or would you add in the cals to make up for the cardio. The reason why I think it may still be applicable regardless of goals is that, the 3000 cal level is already what you need for your goal at that time.
Lets take cutting for example - say the 3000 includes a 3-400 cal deficit. If you now do cardio, and don't add any cals, that would bring you into a sever deficit of 800-1000 for example which is probably too much. Ditto for bulking: cardio will bring your caloric intake under the required amount to exceed maintenance etc.
I may be totally off base though so if I am missing something please fill in the blanks.