The main thrust seems to be that if you think CLIs are better, that's only because you haven't seed any good GUIs. To illustrate the point, the author shows an

The main thrust seems to be that if you think CLIs are better, that's only because you haven't seed any good GUIs. To illustrate the point, the author shows an image of cmd.exe (in which somebody is playing an implementation of Zork written for a CS class.) I suspect the author has little experience with good CLIs.