If you're going to walk to the store, don't push you car there! Just walk. So if you want to write code, don't retype what the LLM said, create your code from your own brain.
For example, I don’t handwrite the code that the compiler produces, but I know how to troubleshoot the IR/assembly and fix optimization issues that arise occasionally. That makes me better at my job of directing the compiler.
They most certainly do, but on a mid-higher level. They don't probably know every single motion and definitely lack hands-on experience. But they know enough to be able to manage them efficiently.