these pillocks, often referred to as passengers, are taking allsorts on board including clearly what is hold baggage, there ain't no way this baggage conforms anywhere near to the nominal weights but I've never been asked to have my hand baggage weighed.
Pillocks who are asked to do this by certain Locos, like Ryan and Easy.
Less stuff to check in and handle, and a lighter (on paper) aircraft in one easy (no pun) move.
Money saved all round.