[ceuk]

Good user interface/software design is good regardless of whether it is graphical or not though.

Having a row of icons with vague meanings, or endlessly nested/badly categories menus isn't intuitive or easy.

Conversely, there are a plethora of terminal-based programs with absolutely excellent UX.

Anyone can edit a well-documented template/example config file, and a good CLI program is almost like an interactive conversation, which again is an extremely intuitive experience. It's not the fault of whether the interface is graphical or not in most cases, it's just mediocre/bad software.