I would argue that a good terminal app can help make something easier to use for both technical and average users alike. Since you can assume that the terminal

I would argue that a good terminal app can help make something easier to use for both technical and average users alike. Since you can assume that the terminal will be never or very rarely used by average users you can make the advanced functionality available as command line applications and leave the most basic/common options in the GUI. A naive user is far more likely to check a box and click apply by accident than they are to type "rm -rf /". A good example is a modern version of Windows, the control panel is full of options,tabs,checkboxes etc that can do weird stuff to your system and consequently make it harder to use because (until recently with powershell) windows has never had a useful commandline.