Covers most of the points I'm sure many of us have experienced here while developing with AI. Most importantly, AI generated code does not substitute human thinking, testing, and clean up/rewrite.
On that last point, whenever I've gotten Codex to generate a substantial feature, usually I've had to rewrite a lot of the code to make it more compact even if it is correct. Adding indirection where it does not make sense is a big issue I've noticed LLMs make.