The golfing machine was the birth of golfing language today because it defined many terms that had loosely been used and has given teachers a reference point. Communication allows the teachers the opportunity to discuss without the chaos of having to both discuss and then define the words used. It gives them an opportunity to make the undescribable to what was before describable to their students about what happens in the golf stroke.
yes- Kelley's vanacular is key to learning but equallly important is the focus of instruction by the instructor- you may not need its path.