Because to get it working, something like udev, edev, libinput needs to be brought over, polluting a clean system. Some quotes from: https://xenocara.org/Wayla

Because to get it working, something like udev, edev, libinput needs to be brought over, polluting a clean system. Some quotes from: https://xenocara.org/Wayland_on_OpenBSD.html https://xenocara.org/Wayland_on_OpenBSD.html >Input is more complex to get working since Wayland applications expect Linux input model with udev, evdev and libinput. >seatd and libseat provide support for non-systemd based systems. A basic port to OpenBSD/wscons is needed So Wayland requires Linux specific items to be ported to BSD. Maybe FreeBSD did all that work themselves. Was that work accepted into upstream ? Based on how Linux works these days, I doubt it. So maybe each new Wayland Release will need to be patched for FreeBSD.