Your suggestion is also that of an educational outsider. Each class is different. The “class” that your “best of the best” is teaching on the video is certainly made up of individuals who are different than those listening to such a video. More often than not, such videos are shot with a class composed mostly of white suburban kids. Or even if they are not, those kids are not your kids. There will be different reading levels, different abilities to grasp the information, possible physical limitations which require modified instruction, questions kids might be too inhibited or shy to ask, lest they appear “dumb” to their classmates. So a classroom teacher has to know to anticipate these questions the kids don’t even realize they need to ask and answer them. The teacher in the video is not speaking to your kids. They cannot be pitched precisely so that Jose in the back row will understand or Leticia in the row by the window will put away her mirror and pay attention. What will you do, keep stopping this exemplar video to address these kinds of issues in your classroom? Will the fully trained and licensed teacher in the classroom be reduced to a servant or other inferior of the teacher in the video? Wow, what a great feeling.
First of all I did have a teacher in the classroom and any subservient role to the video teacher is entirely up to them. I wasn't proposing the entirety of the course be video. If teachers are teaching to Jose in the back row, then Juan in the front row is being screwed. Jose in the back row is going to end up taking care of people's yards where Juan has a shot at college. By the way the teacher you are describing in your narrative is the best of the best and should not be confused with many of them.