When the 400 was operated with more cabin crew than it has now, surely that must have been dangerous also. If you hit turbulence then, there was one less jumpseat available given you had one more crewmember occupying one of those seats.
PPrune really is a dead horse now given the standard of debate going on. While Rome burns and QF mainline employees face an uncertain future, so much angst is directed towards something that should be of benefit for us all, but which is despised by those who feel they should have control of it.