I think the main issue with most documentation is that everything is treated equally, and often critical details get a passing mention, so it's helpful to have focused course material that can give some indication of priority and a heads up for the tricky parts.
The challenge with this, and I agree with you, is that I don’t think you’ll find many people capable of creating such a course being in the course creation business. I suspect almost no one would be interested in doing it. The only financial motivation would be to go the consultancy route like Uncle Bob, and I’m not sure who would have any sort of motivation to do it as a hobby project. You’d be more likely to find those people contributing to the actual programming language in some way.
As I see it the programming teaching industry, or whatever you might call it, is similar to other self-help industries where people who are good at marketing sell you empty calories. Even if you created an in dept course on something, you would probably have an issue distributing it in the vast ocean of courses.
