A few weeks ago I was looking into `XReparentWindow` because certain things use it
(DAW Plugins). I don't think Wayland can do something similar (but I guess XWayland works), GTK and Qt both seem to have their own version.
Looking more into plugin libraries, a lot of it is based specifically on X, I don't think that's going to be rewritten anytime soon.
I've felt for a while stuck between X and Wayland. Same with Pipewire and Jack/Pulse.