True FM, but doesn't solve the manual insertion problem for the guys who have strings of days off and want to go away somewhere. Not a good idea to press 2 from overseas. Otherwise we'll get to the point of having our passports checked like Cabin Services do with the cabin crew.
Better to organise a swap, and get your days off anyway. Until AAR is forced to admit and announce his over the top policy officially, there should be no valid reason for rostering to deny a swap.