> This way you never have content that is out of sync.

They can definitely go out of sync, particularly if something that isn't the editor or the AI changes the code (e.g. running shell commands or opening the file in a different editor and making changes there). I've had a whole load of issues with VSCode where there's been spurious edits all over the place that show up again even if I try and revert them, because every time the AI makes an unrelated edit, VSCode tries to reset the file to the version it thinks exists and then play the AI's edits on top.