Well, it did let me make fake SQL queries out of the JSON query I gave it, without me having to learn SQL.
Of course, I didn't actually use the query in the code, just added it in a comment for a function, to give an idea to those that didn't know JSON queries, of what the function did.

I treat it for what it is. A "language" model.
It does language, not logic. So I don't try to make it do logic.

There were a few times I considered using it for code completion for things that are close to copy paste, but not close enough that it could be done via bash. For that, I wished I had some clang endpoint that I could then use to get a tokenised representation of code, to then script with.
But then I just made a little C program that did 90% of the job and then I did the remaining 10% manually. And it was 100% deterministic, so I didn't have to proof-read the generated code.