I say that the technical merits are irrelevant because I don't believe that they're a major factor any more in most people moving or not moving to Wayland.
With only a slight amount of generalization, none of these people will be moved by Wayland's technical merits. The energetic people who could be persuaded by technical merits to go through switching desktop environments or in some cases replacing hardware (or accepting limited features) have mostly moved to Wayland already. The people who remain on X are there either because they don't want to rebuild their desktop environment, they don't want to do without features and performance they currently have, or their Linux distribution doesn't think their desktop should switch to Wayland yet.
Every time I try Wayland, something doesn't work. The time before last, subpixel DPI scaling was badly broken. This last time, there's some glitch where the screen jumps right a couple pixels (and back) every dozen seconds. I don't have any interest in spending my time trying to fix Wayland issues when X just works.
When something crashes on Wayland, my entire system goes down. When something crashes on X, I can at least kill it with a GUI. I refuse to use Wayland as long as it has the potential to freeze my entire machine.
I just don't think KDE will be worth it on plasma until KDE 6 / Qt 6. Basic components like SDDM supporting Wayland still have to be solved before KDR provides a first class experience. Try messing around with environments like sway, Hyprland, and Gnome the stability difference is night and day compared to KDE.
Yep I second this. I've been using GNOME, hyprland and sway interchangeably since 2021 Oct on my system as my main DEs. I recently wanted to give Plasma Wayland a try. Was met with multiple crashes, and freezes that required me to long press the power button to reboot to get it working again.
While the new rootless wayland on SDDM worked fine for me, there are several things in Plasma that still don't yet have support for Wayland. I could never get screen sharing to be reliable on Plasma Wayland, despite having the right portals installed.
GNOME, Sway, and Hyprland are miles ahead in having a stable system on Wayland.