Those 11 steps would probably take me 15 minutes.

There are a lot of small refactorings that I wouldn't consider to be worth 15 minutes of my time, so I wouldn't do them.

Outsourcing those to an agent means I don't have to make that tradeoff, which means I can get better quality code.

But yes, for a lot of my work I'm now a Claude Code / Codex first developer. I run Zed so I can navigate the code and occasionally make small edits.