That one just makes me sad and angry. I try not to judge people, but I would judge the shit out of someone for doing that IRL.
If you find visual clutter distracting or upsetting, it’s a pretty useful trick to still be able to own a bunch of books. Alphabetize your books, and you can still find them. And most people I know can find their favorites even without that.
It’s kind of like getting mad at people who organize their books by color. If you’re a visual person, there’s a half decent chance you remember the color of the book rather than remembering the author’s name.