Re: Almost perfect, just get rid of GNOME
2+ years on KDE neon. I use it for work (law).
Dolphin is a decent file browser. I really enjoy right-clicking on a file and selecting copy location to copy a path of the file into my clipboard. I do it a lot.
KDE neon is less than artful at managing multiple monitors--I know because I have 3 monitors on my setup. In system settings, you can select any monitor as the "primary monitor," but the selection has limited impact. Getting apps and windows to automatically open on a preferred monitor takes effort (Configure Special Window/Application Settings) and behavior depends on the app. The settings tend to hold, unless you unplug a monitor or change the order of monitors.
I like (i.e., need) a GUI. I came to Linux because of Windows 10 telemetry. Hopped around on distros for about 2 years before KDE neon. Started with Solus Budgie, but had some issues installing certain apps. Tried Ubuntu Mate, but was not quite rich enough of a desktop, and Manjaro was amazing (or I was just blown away by KDE)--until an update killed it. Kubuntu froze randomly. I also looked at KDE on Fedora (but was less familar than Ubuntu) and KDE on MX Linux (ok, but seemed a bit noisy, feature-wise). KDE neon has (fingers crossed) mostly been just working for the past 2 years.
I use Ubuntu Mate on machines that I will only access via x2go (e.g., offsite or headless), as a desktop served via x2go server is a smoother connect process when its Ubuntu Mate than KDE neon, in my experience.
I do wish KDE neon would get more mention in distro discussions. I know it's claimed to not exactly be "a distro," but it is the version of KDE which has been the most reliable for me.
One issue I occasional experience with KDE neon is that the panel (I have vertically on the left side of my desktop) disappears and comes back after 2 seconds. This happens rarely--maybe a couple of times in one month, and then maybe not for months at a time.
Some basic but important things that have been working for me on KDE neon: editing applications on the application menu, scanning on an HP MFP M478 to a samba share, printing to HP and Dell printers on the network. Autokey (gtk) shortcuts work, as does a custom Kwin shortcut to dim inactive windows (via help from Reddit). Remarkably, PulseEffects started working recently (perhaps it had something to do with the Jammy Jellyfish upgrade), so now I have working equalization to add some bass to my headphones.
Frankly, on occasion, I look at my desktop PC running KDE neon, with many apps accomplishing things efficiently simultaneously, and I am in awe of the fact I have this powerful system doing so much, without the need of OS license from Microsoft, without massive amounts of telemetry (but some monitoring here and there, depending on apps), and without having an inordinate amount of skill to set it up.
I very much look forward to your article on KDE problems. (And, it is already good information to hear about the indignant reaction in your discussions.) There's all kinds of room for improvement, which I hope you will be able to encourage. I do just want to note that I have been able to make my KDE neon setup do a whole lot of useful things--hard to be sure where the credit should go, but it does let this GUI user get work done.
Main pc: KDE neon 5.26, X11, AMD Ryzen 9 5900X, 32gb ram, NVIDIA GeForce GTX 760