How a graphical user inferface is dumb? what makes you think text is better than picture and graphic? if text is better why have we moved from the text-based interface to graphic based WIMP environment that even linux using right now.
This and the other comments you have made indicate, and let me put this as politely as I can, your lack of knowledge of the difference between MS Windows O/S's, and Linux/UNIX O/S's.
This is NOT about "plain text" vs. "Pretty Pictures". It is about the true power of a text based Linux, vs GUI based MS Windows.
Let's examine the local data-center, or massive "Cloud" server "farms". (What I say about servers can be applied to Linux workstations as well.)
Some reports have estimated that over 60% of all physical, and/or virtual local data-center servers, and possibly even more in Cloud server farms, are Linux based. As for Supercomputers, that number is over 90%!!! Why are they NOT Windows based??? Why has the ISS switched out all MS Windows based machines and moved to Linux??? (By the nature of Linux "Distros" (Linux Distributions) available free of charge, and can be installed with NO License fee, or registration, these numbers can only be very rough estimates.)
These servers are running File/Print/Firewall/Router/SQL/Mail/Web/Backup/Malware detection/VCS (Version Control Systems)/etc, etc, etc... applications and services. Probably over 90+% of these servers are text based, and NOT running a GUI by default, and many or most of these may not even have ANY GUI Windowing system installed at all. Why don't these powerful Linux servers need to run a GUI?
When you think of a "text" user interface, you are probably thinking of an MS-DOS prompt, an EXTREMELY crippled CLI, or "Command Line Interface". "bash" on the other hand, the default CLI or "shell" in Linux, can be used to write much more powerful complex shell scripts or more simple one-liners. In addition to built-in bash commands, and other Linux/UNIX commands and apps, other scripts can be written in languages such as Python, PHP, Perl, etc...
Take this relatively simple bash one-liner, from bashoneliners:
find /directory1/directory2/ -maxdepth 1 -type f | sort | tail -n 5 | xargs md5sum
All five commands, find, sort, tail, xargs, and md5sum come either pre-installed in most Linux Distros, or easily installed, for free, through the Distro's package manager. Now, perform the same operation in a MS Windows GUI. What apps need to be located, downloaded for free, or purchased to perform the same operation? How much manual work needs to be done despite the GUI??? (Far more complex one-liners exist in the real world using sed, awk, grep, and MANY, MANY other commands, and applications.!)
Linux/UNIX Administrators can and do perform most of their work through a pure Linux console, or bash "terminals" within a Linux GUI. One Linux Administrator can maintain dozens of servers, in multiple locations anywhere in the world, from a remote location! If I were to maintain ANY MS Windows servers, I would want to be in front of the computer to perform ANY maintenance.
I could go on, but instead...
I agree with MikeyD when he mentions two documents,
William E. Shotts, Jr.'s, "Learning The Shell"
and
Eric S. Raymond's, "The Art of Unix Programming"
Please take a week (or two!) off, curl up with a Linux laptop, and study both these documents thoroughly (Along with other publications mentioned in these two documents, then review your opinion given.