I think what this fails to cover is that managers rely on other people to do that understanding and keeping things in mind. When there's a problem, the manager isn't just saying to a random person "go fix this", most of the time they're relying on somebody who has a deeper understanding of the problem and is not likely to randomly break something else just to fix this one bug.
Fearless refactoring is possible given test coverage? True in my experience; both with higher-risk human-developed software and with agent-coded software.
I haven't yet made myself learn the new swarm of concurrent agents with different specializations/agent_instructions methods yet.
Are multiple worktrees worth the cognitive burden and merge overhead?
