"this is achieved by using gravity as the primary force for movement instead of muscular energy"
This does not mean gravity is the only force! It means it is a significant force in his style. In a related article he says you have to put muscular energy back into the system. But, if you quoted this it would contradict what you want to disprove.
other important items you left out from the article:
"The Pose Method is a system for teaching of human movement, by determining the key poses, and a model of working with the laws of nature instead of against them."
"Pose Method is in a continual state of refinement both for coaches and athletes as understanding increases" !
"The human organism exists and develops in the gravitational field, and should stay within a certain biomechanical framework, in which limits are appropriate for the full utilization of the effect of gravity."
He is trying to tell you that his statements are not definitive. As Gatorade has said it is about perception and how to achieve his concept of efficiency of movement.
Sometimes a teacher has to say things that are not perfectly correct to help the student achieve an understanding. I know, I have done that very successfully. Romanov is a teacher. Become one yourself and you will learn that teaching is not black and white, it only has one goal, get the student to learn. Successful teachers learn how to reach the student on a level they can relate to and then help them achieve an understanding. Often we communicate with imagery that while not perfectly correct causes the 'lights to come on'.
You should take the good from what he says and leave behind what you don't like instead of wasting time bashing it.