I like having that assigned to a key, for resizing windows without having to grab an edge or corner accurately with the mouse cursor. That was an especially annoying thing to do on my first install of MX Linux. Edge/corner detection of windows with the mouse cursor was horrible. It's better now (maybe due to an update in Xfce or Compton, who knows) but I've grown to like having that function on a key. Left click plus "easy key" moves the window, right click plus "easy key" resizes (if it's near an edge it just grabs that edge to resize, but if it's remotely near a corner it'll allow resizing of the window as though you'd grabbed the corner).
I just don't want that assigned to the alt key.
That's what I use the Windows key for now.