Just Coursera has more high quality educational content than all these silly videos that were ever produced combined. Western society moved forward - unlocking education from ivory tower universities and making it freely accessible to students around the world.
Without going down the "moral decay" debate and with all due respect to the coursera content, pedagogically wise nothing touch old video content (check out also the ATT science brief), like wise for the science books. It is only very recently that we have content producer like 3blue1brown or learnengineering that start to match or even exceeds those.
