It’s all a bit silly really.
According to the ABC news one of the aircraft does not have engines and another has landing gear issues so they are not worth much at all.
also in one of the photos the heavy machinery is parked in front of the B737 which is at the gate. Obviously the bright spark who put it there hasn’t heard of pushback!
Doesn't Sind like much thought has been given to this at all, mainly publicity stunt.