CODEX and LLM's ingeneral are a big fat lie!

You still have to be skilled in the area you are working to properly “guide” the AI to do the right thing. For example, I can usually guide the AI to write code well, but I am horrible at guiding it to setup a working sync in Quickbooks. I can usually catch the errors it makes in writing code, but no idea about what assumptions it is making in Quickbooks. So you have to guide it with your expertise to be effective. Otherwise, you can ending up wasting whole days, like I did (with accounting), when doing something considered advanced, outside of my knowledge or experience.