Citizen dissimulo.orator ...ya got it arse-about.....it's not 'Windows is simple'...it's 'Linux is NOT simple'.
Ma and Pa Kettle CAN use Windows because it does not demand of its users..."you bloody better be wearing a propeller cap before you dabble with me"...as Linux does.
Windows CAN be used and abused by the brain-dead and the idiot savant alike.....everyone finds his own level....from 'click and giggle' to 'chuck the gui...I do it command-line or not at all'.
Linux has only one level....the 'dabbler' gets jaded and departs....leaving the 'I've invested in a wardrobe of propeller caps so I'm sticking with it or bust' devotee.
Ma and Pa Kettle look like dorks if they wear those caps...so they stay away....