If you've taken the time to understand why generations of professional have done that way, and if you you have something else to propose, than the discussion is welcome and the result will be interesting in every case.
Otherwise, it's just a waste of time.
Most people on HN are developers and not as fluent as system engineers in shells and UNIX tools. The need for minimalist, "silent" UIs comes with fluency. This is also true for network engineers and database administrators.
No, it comes from wanting to reuse the tool!
Would you like your browser to open plenty of pop-ups with messages like "Congratulations! The font XYZ was successfully loaded from C:\foo\bar" or "That's incredible! I looked for a JPEG on server www.qqq.com ... and it was there!"? No, you wouldn't. And I wouldn't like "mv" to babble every time it renames a file on the hard disk.
So what? Is desktop computing all that matters? Networking, scientific computing, mobile telephone, don't they matter?
Unix was never meant for looking magic to clueless users; it was meant for programmers, i.e. for people who use the computer and not just some programs written by other people. And, in its realm, it has been brilliant! Not perfect, but very good!
By the way, here's a link to learn something more: https://blogs.msdn.microsoft.com/wsl/
I.e. your "decades of useful outcomes" argument doesn't favor the point you are making because the opposite philosophy (a more verbose userland) has many times more "useful outcomes". Therefore, according to your own logic (which I don't subscribe to because I think popularity is a useless measure of sound design) you "should stop and ask yourself whether it's just a matter of taste on your side or, even more likely, of ignorance."
... except that they could and did. People were not lacking in imagination. A science fiction writer imagined the Internet-connected smart 'phone in 1976, and put it into a science fiction novel (calling it the "mini-sec") titled Imperial Earth. A decade before that, an engineer imagined windows, hypertext, the mouse, word processing, graphics, and video conferencing, and gave what was later called The Mother of All Demos in an ACM/IEEE conference in 1968.
By the way, I haven't down-voted you, but I think I understand why others did. Before calling stupid a pillar of a (programming) philosophy with decades of useful outcomes, you should stop and ask yourself whether it's just a matter of taste on your side or, even more likely, of ignorance.