Could you elaborate on what you find humorous?
So do you actually disagree with the content of the video
Yes and no. I agree with the instruction that we should not to rotate nor lean in.
I somewhat agree with this statement from the video "...in many respects it[the inside leg] leads the tipping of the outside ski". However, rather than focussing on tippng the inside leg, one should focus on tipping the foot of the old-outside-ski/soon-to-be-inside-ski to it's little toe edge.
I disagree with the focus on tipping both legs simultaneously during the presented side slip drills. Again, the focus should be on the feet, and the tipping should be to the little toe edge first (the uphill ski, in the case of the sideslip drill) rather than simultaneously tipping both feet.
I agree with the statement: "We have to be in balance at the transition. We have to align ourselves and have all of the proper movements happening at the transition of our turn so that we can access the top of our turn.".
The instruction to keep back the inside foot is, of course, spot on. But then, unfortunately, we are told that we don't have to pull the foot back. The only way to keep the foot back is to focus on pulling it back. The moment one gives up on pulling it back while in a turn or transition, the foot squirts forward.
or do you just want to awe us with your impressive movement analysis skills?
What do you mean by this part of your question? Do you use movement analysis to impress others? I was not aware that was the goal.
The demonstrated turns in the video were presumably meant to show us skiing that results when focussing on tipping the legs simultaneously. The demonstration shows turns with the inside leg being used as an outrigger to keep the skier from falling inside, and it shows transitions with both skis on their inside edges. Is this the goal?