That's a nice little self contained example. I have yet to see this approach work for the day job: a larger codebase with complex inter-dependencies, where the solution isn't so easily worded (make the text box pink) and where the resulting code is reviewed and tested by one's peers.

We actually had to make a rule at work that if you use an LLM to create an PR and can't explain the changes without using more LLMs, you can't submit the PR. I've seen it almost work - code that looks right but does a bunch of unnecessary stuff, and then it required a real person (me) to clean it up and ends up taking just as much time as if it were just written correctly the first time.