It's a fine point if made in isolation, but TUIs tend to be more technical and useful simply because they require using a terminal at all. GUIs tend to be made for the non-technical iPhone audience.
So while I'm not fundamentally opposed to graphics, I'm absolutely opposed to the "average user" culture surrounding it. I don't care about the "normal person", I don't want "user experiences" that hide the computer, I want all of the computer's primitives exposed so that I have full control.
> GUIs tend to be made for the non-technical iPhone audience.
Except for, you know, every serious professional application ever.