I don't believe so there is huge problems with hybrid/offline learning at scale with distractions, social interactions etc that cannot be fundamentally solved by Khan Academy.

But having a 'master teacher' is something I definitely welcome because my education, like so many others, varied year to year, on say math, because of educator quality.

Khan's 'reverse school' is something I wish I could have experienced growing up as I think it would personally have worked for me.