I think its because a lot of this stuff is faster to do through command line. And people developing GUI tools are ones that are already good at CLI so they might not understand why a graphical tool might be needed and then ones that do, start learning CLI to program a tool and on the way might realize it’s just easier to console. Kinda where I’m at. Plus if there are many of the same tool it might vary in GUI and when giving someone instructions it’s easier to just say the command to type than to cover every possible variation of GUI environment. That’s my take on this.