I understand that the programmers were trying to minimize bandwidth usage by those who forget to shut it off and just keep it running and are not even there. But they should realize that disabling the autoplay makes the entire product less valuable to everyone else.
How about a compromise? Allow the sub-chapters to roll on consecutively without any clicks, but require a click to go onto the next section. Many of the sub-chapters are quite short, so the constant clicking can get very annoying. One other idea: you could force the viewer to choose in advance what Sections they wish to view, show the estimated time, and require a confirmation. You could still require a go-ahead click between Sections (but not between the short sub-chapters). This might even SAVE bandwidth because it would cut out many unnecessary communications from the viewers' computer.