For those of you sympathising with the subject, these terms are clear.
If you don't like them, or don't agree with them, then don't sign up.
9.2.2 All Qantas Points held in a Membership Account will expire at midnight Sydney, Australia time at the end of the 18th consecutive month for which the Member has not earned Qantas Points or Status Credits or redeemed Qantas Points (excluding any transfer of Qantas Points to or from an Eligible Family Member and excluding any transfer of Qantas Points from Qantas Business Rewards).
If you don't like them, or don't agree with them, then don't sign up.
9.2.2 All Qantas Points held in a Membership Account will expire at midnight Sydney, Australia time at the end of the 18th consecutive month for which the Member has not earned Qantas Points or Status Credits or redeemed Qantas Points (excluding any transfer of Qantas Points to or from an Eligible Family Member and excluding any transfer of Qantas Points from Qantas Business Rewards).