> advances aren't really published

https://dl.acm.org/

I don't see how this disproves my point. There's a vast divide between "theoretical" and "applied" software engineering. You don't usually see Google engineers publish their search optimisations in journals. And similarly, you don't see university professors making commercial libraries from their articles' ideas. This isn't the case in every field but in software, it very much is.

And this implies that training on the "theoretical" side of things doesn't give you much insight on the "practical" side. Stuff like cyclomatic complexity, UML diagrams and all that stuff might be well-represented in literature but way less so in real software, so training on the literature will produce completely different software than training on production software code.