Disappointing that it didn't even touch on what I see as one of the central items of Khan Academy: the "watch lectures at home and do homework with teachers" me

Disappointing that it didn't even touch on what I see as one of the central items of Khan Academy: the "watch lectures at home and do homework with teachers" methodology. That seems like the most interesting bit -- one that could get a great teacher to expand their influence across many more students than they could otherwise. (ie, they have more time for 1-on-1 help since they do not have to put so much time into lectures)