> the goal is to employ teachers and education of students is a welcome-but-unnecessary industrial byproduct.
This is pretty much exactly what I was thinking, albeit less eloquently, as I read this article. The entire article, while it made good points, always had an undertone of "Khan Academy is dangerous to me, therefore it's dangerous for everyone."
It could just be a difference of perspective - the author is a teacher and has been trained in a certain way of educating students, so any idea that isn't the way they were taught seems weird, scary, and wrong.
I'm not saying that Khan Academy is entirely the right direction to take - I haven't used it enough to say, and I'm too old to be able to stand in the shoes of its target demographic - but the entire time I read the article, I felt a bias underpinning the entire thing.