I have a project that I've leaned heavily on LLM help for which I consider to embody good quality control practices. I had to get pretty creative to pull it off: spent a lot of time working on this sync system so that I can import sanitized production data into the project for every table it touches (there are maybe 500 of these) and then there's a bunch of hackery related to ensuring I can still get good test coverage even when some of these flows are partially specified (since adding new ones proceeds in several separate steps).

If it was a project written by humans I'd say they were crazy for going so hard on testing.

The quality control practices you need for safely letting an LLM run amok aren't just good. They're extreme.