Because there are other ways to validate the output, types being one of them, tests another. Or simply running the code. It's easy enough to validate the output given the right approach that code generated by an LLM (usually as the result of a conversation/discussion about what should be accomplished) is a net positive.
If you zero-prompt and copy-paste the first result into your codebase, yeah, the accuracy problem will rear its ugly head real quick.
If you zero-prompt and copy-paste the first result into your codebase, yeah, the accuracy problem will rear its ugly head real quick.