I use Arch and love KDE Plasma. It even has a blue light filter. Am never going back to Windows. KDE runs faster, looks nicer, does not have forced adware and telemetry. Great daily driver.
I had to install an extra app to control startup applications.
Fractional scaling and several displays was wonky, made screen recording impossible. My 60fps display has a stuttery mouse pointer.
Hiding keyboard layouts like Swedish Sami or svdvorak didn't make things better.
Copy and paste not working cross screens (wtf?). Drag and drop not working if you switch windows using alt+tab. Context menus locking focus from the whole desktop: open the nautilus file transfer dialogue and suddenly I couldn't click anywhere else than in nautilus. Having it open and trying to interact with another app just wouldn't work.
At the end had accidentally tried KDE in a VM and realized I wouldn't tolerate a hammer behaving badly. I went back to opensuse the same day.