I don't see what the big deal is about having your bags searched, unless of course you are guilty of theft or have something to hide.
As for a random bag search being an "attack" on crew......
Do you pipe up when you are asked to have your bag searched in a shopping centre when leaving a store by their door greeter, and say that it is an attack on you for simply being a shopper???
At the end of the day they (QF) are allowed to search bags, and they chose to do so. Why are people so upset about it? Nothing to hide, nothing to worry.
Have a great day,
RaverFlaver