We have had readily available video communication for over a decade.

We've been using "video communication" to teach for half a century at least; Open University enrolled students in 1970. All the advantages of editing together the best performances from a top-notch professor, moving beyond the blackboard to animation, etc., etc., were obvious in the 1980s when Caltech did exactly that and made a whole TV series to teach physics students and, even more importantly, their teachers. Adding a new technology that spouts bullshit without regard to factual accuracy is necessarily, inevitably, a backward step.