What is the point of using tunnel-rat for the commands?

[kamyarkaviani]

The slash command menu is rendered in the editor inside of a tunnelInstance.In and then rendered in the menu with

<EditorCommandTunnelContext.Consumer>
      {(tunnelInstance) => <tunnelInstance.Out />}
</EditorCommandTunnelContext.Consumer>

Can someone please explain why tunnel rat is used here in this way? Is it just to prevent re-rendering the editor when the command opens and closes? Or is it because of the way EditorCommandOut is rendered from the suggestion plugin somehow?

component = new ReactRenderer(EditorCommandOut, {
  props,
  editor: props.editor,
});

Because it seems to me that you can just call ReactRender on the command component itself. What purpose does sending it through a rat tunnel serve?