Supported by whom? Xorg, the server, no longer maintained. Also, OpenBSD users already a tiny fraction of users...if every single OpenBSD desktop switches to Linux and Wayland, not a single metric will change significantly.
The `-X` and `-Y` options were a mistake to integrate into `ssh(1)`, it makes an assumption that everybody uses an Athena/X11 type system. That said, you can combine waypipe with ssh to do the same thing (ie. `waypipe ssh` will give you the same effect as `ssh -X`).
> Their ssh supports the -X and -Y options to run remote X applications.
Cool, I remember using it in 2003 a few times. I highly doubt many people going to miss if those were gone. I would not be surprised if the majority of ssh server installations disable x11 session forwarding.
> Until then, get comfortable in a small and discardable minority.
Are you sure you're not confusing Wayland users with OpenBSD users?
X is deprecated. Its maintainers do not want to maintain it. They want you to use Wayland instead.
The major DEs have removed their X code paths, or will in the next year. The toolkits will follow suit. X is a dead end for new and non-legacy software.
Are there hard numbers to back up the 80% thing? I don't know one way or the other, I'm just skeptical because I still have applications which don't work correctly under Wayland (Discord), and if I have such problems it wouldn't surprise me if others do too.
Can you show where you got the impression that "X11 is gone"?