Unless something like https://kde.org/announcements/plasma/5/5.12.0/spectacle-noti... is what you consider to be passable looking of course.
I'll take function over for every day. (I daily drive KDE, it works fine and doesn't get in my way. Most of the time I'm either in my editor or the terminal emulator anyway.)
But I also agree. KDE is pretty close to my ideal for a desktop environment. It's pretty close to a windows 7 feel which is perfect for me.
The screenshot you posted is likely from KDE Plasma. The project don't have much funding to hire a UI/UX designer IMHO.
Well this is the point. I was countering the claim that flat UI doesn't require any design talent to look passable.
I feel like UX designers don't realize that their job should have a natural tailing off as we discover and lock in the good ideas and discard the bad. Even if the ideas aren't that great, users can at least get good at however it does work, if it stays constant. Instead, we just get more dice rolls, eyecandy, and frustration.
I for one hate the power dynamic that OS and website designers have over me. They can just sneak into my house and rearrange my furniture on a whim. Even if it sucks, I would adapt to it if it stayed constant! Instead I both hate it and can't learn it, because everything is different and keeps changing when I least expect it.
At this point my brain has given into learned helplessness and won't retain much of anything at all, but it's next-level figured out that it's useless.
Designers seem to have a bad track record, and it's getting worse.
Sorry, designers.
Eg, MacOS's new system preferences panel is worse than the old one. And its stupid putting the windows start menu in the middle of the screen, where you can't as easily click it with the mouse.
The start button is eternal!
We see it in the FOSS world too with GNOME.