It sounds like you're being confused by the surface appearance of things, rather than paying attention to their fundamental nature. Maybe that's why you weren't able to understand the arrogant Vim guy's utterance and wrote him off as delusional instead of figuring out in what sense he might be saying something true. It's good that you did figure it out eventually even if you couldn't hear it from him.
Unix wasn't distinguished from other contemporary systems by not using a GUI. With a few visionary exceptions like NLS/Augment, SKETCHPAD, Spacewar!, and GENESYS, computers didn't have GUIs when Unix was born. The Unix philosophy wasn't about using textual commands. Every computer used textual commands except desk calculators. It was about a uniform interface that permits unrestricted composition of orthogonal software components, easy and expressive automation of routine tasks, and prioritizing usability over absolute computational efficiency. These are not, to put it mildly, Photoshop’s strong points.
Unix wasn't distinguished from other contemporary systems by not using a GUI. With a few visionary exceptions like NLS/Augment, SKETCHPAD, Spacewar!, and GENESYS, computers didn't have GUIs when Unix was born. The Unix philosophy wasn't about using textual commands. Every computer used textual commands except desk calculators. It was about a uniform interface that permits unrestricted composition of orthogonal software components, easy and expressive automation of routine tasks, and prioritizing usability over absolute computational efficiency. These are not, to put it mildly, Photoshop’s strong points.