Copilot just suggests code.
Suggesting code is generating code
Neither. Someone else did, and published it. Copilot copied the dialog and suggested it.
> If you change names in those lines of dialogue to fit your story, do you now gain credit for writing those lines?
It depends. Talking generalities isn't productive or interesting. Can you give an example and we can discuss specifics?
> Suggesting code is generating code
This isn't even superficially true