AppleScript because it has so many APIs. BetterTouchTool makes heavy use of it. I taught myself how to code in it when I was 13, and I still use it now.
Doesn't Rhythmbox have that?
You mean the commands you can use on apps like iTunes, Finder, Photos, etc.? Those are not AppleScript-specific per se (AFAIK there used to be an option to write Automator scripts in JS). You'd need the Linux/Gnome/KDE equivalent of the Open Scripting Architecture ( https://developer.apple.com/library/archive/documentation/Ap... ) with active participation from app developers. Sounds like a huge overtaking.
Unfortunately the documentation is AppleScript only.
I guess this is indicative of Apple's commitment to macOS automation...