What you say about video course consumers not understanding computer programming - well, you sure have a point. But then again, a lot of good coders take up Coursera courses. You're saying they don't understand programming?
It speaks to their level of seriousness and dedication. Also, since computer programming isn't conducted by means of video, its teaching can't reasonably be expected to be in that form either. It would be like learning about marriage by watching videos, and then expecting to succeed at the real thing on that basis. :)
IMHO, a video course needs more than just videos to get coders to get their hands dirty. Practice problems, or just open-ended assignments. That's something I am working on.
At any rate, thanks, mate. This was a pretty intense and interesting discussion :)