I suppose I'm an evidence proof of the contrary.

I'm about 3/4 of the way through writing a book on implementing interpreters and compilers [0]. My day job is as a software engineer at Google working on the Dart language.

My highest attained degree is a high school diploma from a shitty public high school in southern Louisiana. I went to LSU for a year and a half and dropped out.

[0]: http://craftinginterpreters.com/

No, and my post never implied anything like it. On the contrary, my point was that I was forced into it by degree requirements. I'd know nothing of compiler design or implementation today without being forced to learn it. It's a valuable skill to be sure, but not one I'll ever use professionally because I find it frustrating and boring.

And that's my point. If you're self-taught you have to be willing to learn things you find completely uninteresting (or boring, hard, whatever) if you want to be as well-rounded as a CS graduate. Most successful self-taught programmers do exactly that. Most people don't.