I don’t think I’m using any really fancy KDE features I just like that I can bodge together whatever I want it to look like… which is basically windows with re-orderable applications, shoving most things I have in the background into the system tray, and jerking off furiously that I don’t have to touch my phone because of KDE connect, but I think you can install it on non KDE systems, since most of the apps that start with K in package managers has some KDE affiliation, but run on any linux system regardless of KDE Plasma graphical shell or any alternative like GNOME or MATE