Earlier quoted context omitted.
> The actual issue is that Windows and Linux don't properly use a ‘super’ key―while the ‘Win’ key is sitting there uselessly. Some people do use the super key. I have it bound to a huge number of actions (WASD to switch workspaces, Alt+WASD to move window to adjacent workspaces, C to close window, X to pause/unpause media, Z to show workspace overview, tab to switch between workspaces like alt-tab does for windows, P…
> There are no worries about conflicting keybindings when you use super Aren't there conflicts on most desktops? - Windows, off the top of my head, has Win+R, Win+C, Win+V, Win+x, Win+D, Win+L, Win+E, Win+Directions - Linux (well Ubuntu/Gnome3) has Win+L, Win+R, Win+Mouse, Win+Directions - macOS (considering Ctrl to be super here) has Ctrl+Arrows, along with many common Ctrl+Letters from the unix world
Most Linux desktop environments (Gnome, KDE, etc.) provide default mappings that involve super, but they can all be changed freely by the user. So you can get rid of Win+L or change what it does (at least on KDE, or if you are using just a WM like i3).
macOS is just weird, with the cmd/ctrl split.