Yeah exactly ANY interface made by humans speaks a design language, and it’s only “intuitive” insofar as the user understands that language. There’s nothing inherently “intuitive” about GUI, it’s a language that you’ve learned through a long process of trial and error. This is painfully obvious to anyone who’s ever had to help Grandma reset her gmail password out over the phone. Same for CLI. At first you’re copy-pasting commands from tutorials and struggling with man pages, but after a while you get used to the conventions. You learn that -h helps you out and --verbose tells you more and so forth. You could make the case that the GUI design language is more intuitive because it’s based of physical objects like buttons and sliders that many people are familiar with, but honestly ever since we abandoned skeumorphic design that argument rings a little hollow.