The CMD key is much better utilized by MacOS than the windows/super key is by windows/linux. Most OS-level things are under command, and I'm free to use readline/emacs bindings in any text inputs across the whole OS and never have them conflict with global bindings.

Windows/linux still defaults to many OS commands being in the ctrl space (like ctrl-c for copy, not windows-c) which causes clobbering in the terminal, forcing people to use ctrl-shift-c, for instance.