All a load of Boll***s anyway, every flight takes off heavy than the accepted loadsheet, no point weighing passengers without weighing their handbaggage stuffed into the overhead locker, or the various amounts of Duty Free liquor that many carry. Not many 93 Kg men in some countries ( no names, no pack drill)
If 93 Kg is the Male standard, how long before "certain airlines" start charging $10 per kilo over this standard ? and not giving a refund on the price paid for the ticket to woman weighing less than 75Kg. ?
Airlines have survived for many years using "assumed" weights, which probably evens out to something close to the correct total weight, since they stopped weighing everybody. The system ain't broke, so don't fix it.
Better things to think about, like why pilots can't cope when some new-fangled digital device tries to take over - sadly successfully in two recent disasters.