Thanks for this nuanced and thoughtful feedback.
Our tool is a new way to present information, and the course creator community is figuring out how best to take advantage of the format. You wouldn't write documentation in the same way that you present to a crowd of 2,000 people, and you won't write a Codecademy lesson the same way you write a textbook. It will take some time to use the platform to its full advantage.
I'm excited to see what innovative courses the community comes up with, and I would love to hear your suggestions about the product or curriculum. Feel free to reach out directly at sasha at codecademy dot com.