I watched my teams move away from writing code. Modern software is increasingly inherited, generated, and changed by people who did not write the underlying code. So they no longer struggle with writing a lot of code. They struggle with understanding current behavior well enough to guide the next change.
Most people will never read "the code", or understand all of it, or even any of it. Tracebook is for people who still need a checkable mental model before asking an engineer, an API model, or a local coding model to act.