Well... This actually reinforces my point. I tried it. Installed, ran it, saw the weird warning from gtk. Then tried to use the ",gd" example shortcut in the terminal. This did not work, then froze my keyboard, and after some frantic desktop switching using the mouse, autokey finally crashed.
I'm describing this experience because it's a common one: it's symptomatic of the "Linux desktop" experience and is the reason why I would much rather use Mac OS. It's not that I can't make things work -- I probably could, but I want to spend my time on other things.
We use ubuntu at work and I was VERY worried about this. But autokey is actually good enough. The UI is not quite as slick but the rest of it is a little better. The exception is the little pop up form fill things which are cool but I found I did not really miss. https://github.com/autokey-py3/autokey