Around 2005 or so, I met a religious scholar who still organized all his research in WordPerfect for DOS. He maintained volumes of notes and papers, collected over a decade or two. He refused to upgrade to the "obviously inferior" GUI versions.
It was truly incredible to watch him navigate through his research. He moved like lightning through all that stuff! It was very much like watching an Emacs or Vim master. (At the time I thought: I should introduce this guy to Emacs and org-mode, he would feel right at home. But he had essentially built his own org-mode in WordPerfect already, so I doubt that he would have switched.)
Props to you, Bill, wherever you are -- I hope that the blue WP background is still shining on your face.
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This got me to thinking. Two things that my WP friend has in common with the Emacs/Vim crowd is that (a) his UI hasn't really changed in 20 years, and (b) the full feature set is discoverable and (macro) programmable. We tend to think that the latter point is more essential (it's the selling point of Emacs, the "programmable editor"), but we tend to overlook the value of the former point.
We incur a cost due to the modern tendency to change application UIs on a whim -- either because of product switches ("this year's chat app") or actual UI changes to existing products (e.g., the Ribbon UI in the Office suite). It's the cost of lost opportunities for mastery. You can hone your Emacs or WP-DOS skills over a lifetime, and what you learned will never become obsolete, as long as you stick with that tool. But forced obsolescence has become a trend in application delivery, and so new generations of application users may never enjoy that sense of mastery.
To me, this is very reminiscent of the "choose boring technology" article that was on HN just a couple days ago. You can spend your attention-credits on solving business problems, or you can spend them adapting to new tool interfaces every year or two.