My own experience with editing windows is that I'll need different dimensions for different tasks. While a vim-plugin or such that did dynamic pane resizing might be useful I don't think the fundamentally aesthetic concern behind the golden-ratio cult adds anything to this.
> each window has a size that is not convenient for editing
> The window that has the main focus will have the perfect size for editing
and nothing to backup these claims except a wikipedia article that, in fact, doesn't.
The parent's comment goes well with the project's claims, I'd say.