I actually really like most of the features in Mavericks introduced. I'm not sure what I'd do without e.g. Notification Center, and even though I usually work on a desktop these days, I appreciate Fullscreen when I need to focus on a single task. I even occasionally use "All My Files", although I agree it should absolutely not be the default view. Still, there's not much cruft!
A handful of features bother me. I think giving files "colors" were better than namable "tags"—the inability to think about it too much was an advantage—but it doesn't make much difference in practice.
The one feature that's in Mavericks and not Snow Leopard which I absolutely hate with a passion is Launchpad. Launchpad completely breaks Apple's beautiful "an app is just a special type of file" metaphor, by creating a special UI that's kind of like a folder but isn't and works based on obtuse and arbitrary rules. I wrote a bit more about this on Hacker News a year ago: https://news.ycombinator.com/item?id=20224370 (Note at the time, I said I preferred Snow Leopard to Mavericks; I've since I changed my mind after actually using them side-by-side.)
I mostly neutered Launchpad in my setup script, but it's technically still there, if you know where to look for it...
You're right, but I still think the details matter, even if not every user knows it. Someone without an art background won't necessarily be able to tell you why they like a painting, but their opinion will still be influenced by all the artist's little touches. When added together, those details make a difference, whether or not a layperson can identify them.
If it wasn't for these types of details, I'd recommend everyone forget about Mac and buy Windows machines instead. They're usually less expensive.
Just yesterday several people from my company were on an important Zoom call with a client. My boss was supposed to present, but he wasn't able to share his screen, which was kind of embarrassing! It turns out the problem was macOS Catalina—the screensharing permission dialog had appeared behind his other application windows, where he wasn't able to find it.
That's one anecdote of one experience—but again, stuff adds up. I don't expect most people to care about UI design as much I do, but I do think it has an affect on everyone's lived experience—how much they like their computer, and how much they're able to get done.
that's a general tech lesson, not a catalina horror story: set things up in advance. setting up screen sharing (or, for that matter, opening zoom for the first time) at the start of a meeting is not a good business move, for anyone, on any platform.
i agree, the details matter; for me, the challenge is to sweat the details, but never lose sight of the big picture.
these forums are filled with people missing the big picture (just my opinion, and i include myself too often)