This matches my experience as well. When I'm working on a codebase that I started and know well, it feels like magic to chat with an AI and watch patches appear

This matches my experience as well. When I'm working on a codebase that I started and know well, it feels like magic to chat with an AI and watch patches appear on the screen to accept/deny. I only accept about 50% of the AI patches before tweaks because it's my project and I care about keeping on the track I laid out. When I'm vibe coding something from scratch I don't have the mental model, I don't always review everything closely, and eventually it becomes an "AI project" that I'm just making requests against to hopefully achieve my goal.