Lames dont sign for a fuel uplift, the pilots do.
Ames or Lames,the bloke down the street or pilots can carry out the discrepancy calculations, the pilot in command or designate has to accept it. Just because sometimes there is no effective means of communications to the refueler it falls to the person doing the transit check of the aircraft to pass it on. Sometimes the lame needs to inform the refueler
There is nothing stopping qantas replacing the term 'LAME' in the policy and procedures to 'Appropriately Trained Person' like they have done with the towing, to any procedure, so at the end of the day unless it's written in law, it's their train set.
But this isn't the argument, who does what, it's an introduction by CASA of a restricted licence and qantas doing deals with the AWU,AMWU and ETU to devise a way to cover this new employee.
Seems cut and dry to a common sense point of view. Seeing as they will be issued with a licence from CASA what case do the unlicenced engineers have. If the privilege were extended by virtue of having an AME trade certificate then different story.