this is probably actually the fault of wayland and it’s fragmentation issue. Various wayland compositors have different methods of interacting with them and this includes remote/virtual input. Because of this fragmentation a lot of developers have just started to kinda give up, on wayland.
for this one specifically, I would assume any virtual input would work? there are a couple possible routes forwards, the easiest is probably using XDG’s RemoteDesktop. However not every compositor implements this, Sway will be getting it soon (or already has it using luminous). There are also numerous compositors that don’t support this.
you have wlr-virtual-{pointer,keyboard} which works on sway and mir, and thats it. I believe there was a compositor that could do this over dbus too?
the reality of wayland is, if it’s not in the core protocol, you aren’t guranteed to have support, and if it is in the core protocol, you still arent guranteed to have support, but the chances are better