Honestly in my brief dabbling with ChatGPT, it hasn't really felt like it's good at the stuff that I'd want taken off my plate. At work I tend to build stuff that you'd describe as "CRUD plus business logic", so there are a decent number of mundane tasks. ChatGPT can probably fill in some validation logic if I tell it the names of the fields, but that doesn't speed things up much. I work primarily in Laravel, so there's not a huge amount of boilerplate required for most of the stuff I do.
The one thing I was really hoping ChatGPT could do is help me convert a frontend from one component library to another. The major issue I ran into was that the token limit was too small for even a modestly sized page.