You're supposed to use KDE with Xorg if you want things to just work. KDE with Wayland if you're adventurous.
Therefore newcomers should use Kubuntu or the likes of it
Therefore newcomers should use Kubuntu or the likes of it
Even if KDE/Xorg is a stable experience is true now, it will not be true in the medium to short term. And a distro like Kubuntu might be 2 years out from merging a "perfect" KDE Plasma experience if it arrived right now.