tl;dr Wayland doesn't have a good set of universally adopted input emulation and UI automation protocols yet, which makes a portable UI automation utility with

tl;dr Wayland doesn't have a good set of universally adopted input emulation and UI automation protocols yet, which makes a portable UI automation utility with the full scope of `xdotool` impossible to write. Work remains to be done to close this gap. The X protocols in this area were not very good, but due to there being a single viable implementation you could rely on them being present (similar to using MSIE-only features in that browser's dominant era).