On the other hand, #1 makes it extremely difficult (if not impossible at all) to have a decent UI automation on Wayland. Sure, you can still do it if you're not leaving the terminal or a web browser, but anything else (including Electron apps) is a no-go. All the existing tools are written for X11.

The last time I looked into it, I found out I would have to deal with each compositor separately. On top of that, the target apps would have to be written with the new API in mind.