IDK, Wayland was super unstable for me on KDE, even on my AMD GPU (RX 6650XT). It wouldn’t launch at all through SDDM (black screen, and I checked other TTYs), and it would lock up quickly (maybe a kernel panic?, I couldn’t even switch TTYs) when I launched through the command line. I used NVIDIA before that, and couldn’t get KDE to launch at all on Wayland (GNOME did, but was buggy), so I used KDE on X until I replaced my GPU.
I honestly didn’t look much into it, but launching GNOME through GDM worked perfectly, so I didn’t feel the need to debug further.
My goal was to use Wayland, and I didn’t particularly care which DE did it. I have a slight preference for KDE, but I honestly don’t use enough DE features to care too much, I just want something to launch apps and then go away. As long as it has a decent terminal with tmux, can switch windows, and has a clock with a calendar, that’s enough for me.