- Orchestrate is situationally useful. Quite often you're better off using agents in series rather than in parallel. Most people bragging about parallel agents or orchestrated agent workflows are just bragging.
- Automate is hard to pin down. Not every process requires automation. But anything that is guarded by mechanical (deterministic) process is VERY helpful for keeping agents in line.
- "loop" is not quite that. Loop as it's currently being described in the field is about automating the process so that it remains entirely within the LLMs (which is a pipe dream, btw). They're actually saying that you don't have to write prompts anymore! That's a dead end. However, "loop" in the sense you're describing (feeding results back into the documentation) is valid.
I wouldn't call the steps on this ladder "proficiency", to my mind they're too close to each other. Someone can go 0-2 in a few minutes if they're comfortable and enthused about reading the basic chat UIs.
3/4/5 are like, if this was a tech tree in a video game, all three would be unlocked at the same time by researching 2.