I have been a KDE user since 2010. I've started this habit a few years ago that every time I upgrade my desktop distro's release, which is twice per year (first Kubuntu, now NixOS), I try out the wayland mode for a while, until I find the bugs to be too annoying. A few years ago I switched back after a couple of hours. The last time I tried I remained there for 3 months. So yes, a lot has improved, but I'm still back on X11.