| it needs to respond to clicks but not display and moving it.

In Windows I can call the system to find the mouse
position at any moment. The system is tracking
it. If you move the mouse the system also has
to repeatedly calculate to repaint the screen. That's
what the OS does.

If it didn't do that you wouldn't see the cursor
move. Maybe you can't see any mouse movement
on your Mac? In that case you might be right. Or
your Mac might be dead.

All of this is pointless sidetrack. If you actually
read what I wrote you could possibly see that
mouse movement was just an example.