I think it stems from a logic fallacy that goes something like this:
If a GUI makes a program easier to use, then by using it, I am indicating that I am less technical.
It's not usually stated explicitly, but it's a pervasive attitude. IMHO, even highly technical users can benefit and be more productive from well thought out interface design. It's not like (most) grandmothers are suddenly going to use Visual Studio because it's got a GUI.
If a GUI makes a program easier to use, then by using it, I am indicating that I am less technical.
It's not usually stated explicitly, but it's a pervasive attitude. IMHO, even highly technical users can benefit and be more productive from well thought out interface design. It's not like (most) grandmothers are suddenly going to use Visual Studio because it's got a GUI.