I'm always a fan of more historical context on code, so maybe it'd be an okay fallback for a proper comment and git blame, but you'd have to find a way to separ

I'm always a fan of more historical context on code, so maybe it'd be an okay fallback for a proper comment and git blame, but you'd have to find a way to separate the meaningful part of the prompt from the preamble that is implicitly inserted into most prompts ("you are a helpful assistant, only output code, no formatting markers, etc etc"). That said, I suspect it wouldn't actually be that useful for the "why" very often, which is usually what's lacking in these cases. I would guess that far more people prompt the LLMs with the "how," e.g. "write a function that takes these things as input and produces this output," which of course we can just read in the code.