Remote desktop is not quite there yet it feels. It's the only reason to still use X imho.
https://gitlab.gnome.org/GNOME/gnome-remote-desktop https://www.mankier.com/1/grdctl
This is already available in Fedora in some capacity. Main focus seems to be on RDP, with some support for VNC as well.
A lot of time I don't want a remote "desktop", but rather just launch an app and have it sent over an SSH tunnel (-X/-Y).
Wayland forwarding over SSH: done
However, for Wayland compositors, this is a distant future; right now, Mutter supports connecting to existing, already running session (desktop). Ability create a new session over RDP is in the works. Everything else is after that.
closing as WONTFIX, everything working as expected