So what i am taking away from this.
Its a HALFARSED not properly thought through security measure by the Australian government.
Oh well what to do but bend over and take it in the bottom like we have to with all of its other stupid ideas.
Thanks for the responses and safe travels. (just not with 125 ml of water filled at a water fountain after going through three security checks only to be pinged at final passport check where they are I presume looking for boat people)