ilaksh put it succinctly:
“The premise that self-taught programmers necessarily have core holes in their knowledge and skills that would have been filled if they had a CS degree is entirely false.”
If you're not self-taught, you must have been taught programming, so I surveyed recent CS grads in the office (N=2), and less than half of these items were taught in class. The rest they didn't know/hadn't learned in class.
I should be charitable—the post devolved into “overlooked class of tools”.
I feel silly ranting, so, ok—
All the #code tools that the tech bros upvoted are useful and interesting, but you won't learn them properly in a class, if you learn them at all. You can only learn something on that list by building something.
So let's build and grow: