It's not always a good idea to have your software auto restart on error...
I gave a bunch of keyboard/mouse sharing tools another look on CachyOS and after many "well.. this ain't working" and some more browsing of various GH issues that are open and unresolved for years, my understanding is now that... Wayland people don't seem to give a lot of shit. Apparently there *are* protocols, but nobody dares to implement them.