There’s lots of existing work on “coding by voice” long before LLMs were a thing. For example (from 2013): http://xahlee.info/emacs/emacs/using_voice_to_code.html and the associated HN discussion (“Using Voice to Code Faster than Keyboard”): https://news.ycombinator.com/item?id=6203805

There’s also more recent-ish research, like https://dl.acm.org/doi/fullHtml/10.1145/3571884.3597130