The value is, at least in my field, that checking for correctness is often a less tiring task than writing the code. With proper prompting, the LLM will also cover more corner cases than will a human think to cover. And to be honest, I really like the names of internal identifiers that LLM come up with. It's a skill that is notoriously lacking in software development.

Additionally, code review with the proper tools can be done relatively quickly and it's always a good idea to get a second opinion - even that of an LLM. I suppose that the human could write the code then ask the LLM for a code review - but that is not common practice.