That don't make sense. You say Ki is at play then go on to say about level of import. It's just a drill.
There is no dancing of verbiage. Why doesn't he elaborate? Because it's a drill on one aspect obviously.
Why do you want or expect everything in one video?
No, but his sole emphasis on ki is way overstated - there are things at play in that exercise that he totally ignores; to me, some of those things are more important then the ki energy involvement.