If that's true, then the people creating the orders for these programmers should simply write code and automate the whole process. We can't do that in other job

If that's true, then the people creating the orders for these programmers should simply write code and automate the whole process. We can't do that in other jobs, like coffee servers, because vision and speech recognition, along with robotics, are too weak. But for writing code, we've got all the tools. If "rank and file" just need to follow rules and do as asked, the asker is far better off asking a computer. But they don't. Why?