That's not what THIS says. Besides, don't you think it's a bit of a stretch to expect Qantas lounge personnel to be aware of each and every little change to access rules? Particularly those rules related to what is for them an obscure US airline? Expect them not to know and come prepared.

I would advise y'all find a way to print the above referenced page and carry it with you when attempting to enter the Qantas lounges.