Users of Photoshop or InDesign or Illustrator or Maya or Logic or Premiere Pro most definitly do express themselves
But in those programmes, the GUI is more like a keyboard of a CLI than the actual programme. The GUI controls are used as tools to use on the main area, the drawing area. A graphical programme like photoshop presents you with a massive empty whitespace for you to draw in. It doesn't tell you where to draw, or what colour to draw. It allows you choose any colour you want. Once you paint some red, you can then paint any other colour.
In this way the programmes you list confirm the "unbounded, "lack of constrains" and "newbie unfriendlyness" of the CLI.
A newbie doesn't know what commands to type into bash, and they don't know what colours to put down first in photoshop.