> If this is expected from LLM generated prose, why don't we expect LLM generated code to exhibit the same qualities?

That's the fun part, it does! I think people who don't pay much attention to the code they ship don't see it, but LLM written code has a lot of the same problems that LLM written prose does. It's repetitive, muddled, and relies too much on crutches - constant boilerplate and pointless, inaccurate comments.