To apologise for OT on another say day in aviation
But this hand baggage issue is all of the airlines own making - they blatantly offer CBO only fares and then everyone moans then there is too much hand and wheeled sized luggage brought on board.
The answer is simple - stop the CBO fares - Only allow one small piece like before, that must be able to fit under your seat, (even new A350's in Y have no centre overhead bins)
(and maybe also allow a ladies handbag or a laptop/man bag/duty frees)