I'm not sure training these models on code and documentation will make that much of a difference. These models struggle significantly with subtlety, relevance, and correctness. It also doesn't have a theory of its own knowledge or confidence, and so tends to "hallucinate" and put out confidently-worded nonsense. Especially for complex and nuanced topics.

A big part of my job in software is having a very sharpened grasp of my ignorance, the ability to weigh a variety of tradeoffs, and the ability to convey my confidence of my abilities and my team's abilities. I'm not sure this is possible for this generation of AI.