I'm confused by this article's complaint that the instruction was so poor that it requires students to "self-teach", and use materials outside of the coursework

I'm confused by this article's complaint that the instruction was so poor that it requires students to "self-teach", and use materials outside of the coursework to learn. In my experience, and sufficiently technical topic will require a ton of self-teaching. Should LS be expected to teach computer science in a way that prevents their students from ever having to use Stack Overflow? If that is the case, they are not preparing their students for solving problems in the real world, where there are no clear answers. (except the ones you find on Stack Overflow.)