KDE devs have been going wild on https://gist.github.com/probonopd/9feb7c20257af5dd915e3a9f2d1f2277 and gist.github.com/probonopd/301319568a554abe7426c02eb5e19b5a telling users that KDE officially only supports Wayland and systemd

https://community.kde.org/Distributions/Packaging_Recommendations#Packages_to_avoid_installing
>Packages to avoid installing
>alternative X11 servers, like X11Libre. We only support Xorg's xserver, both for Xwayland and for the X11 session.