You're betting on the hundreds of top university cs professors to produce better content than the hundreds of thousands of industry veterans or hobbyists...
Why does YouTube sometimes have better content than professionally produced media? It's a really long tail of creators and educators
This isn't new. Textbooks exist for the same reason, so we don't need to duplicate effort creating teaching materials and can have a kind of accepted core cirriculum.
Why does YouTube sometimes have better content than professionally produced media? It's a really long tail of creators and educators