That's not my experience, especially when the inputs are bugs or performance issues. It frequently hallucinates and misdiagnosis without a guiding hand. However, it can still RCA and analyze well and improve efficiency if you keep an eye on what it's doing and push it the right direction.
> If you were to give human developers the same amount of feature/scope documentation you would also see your productivity skyrocket.
I think you run into a ceiling how fast a person can digest and analyze the info compared to a machine
I think this varies a lot. I find with a c++ project I'm working on that the LLM needs a lot of guardrails and guidance, and still gets a lot wrong. But with a vite/js project it often one shots complex and intricate changes in large codebases.
It happens completely routinely, IME. Just compare how much effort it takes to clone a system that's already written versus making that system from scratch.