Any debate about QF credit card members just getting status by cashing in points for any seat awards is superfluous. The fact is that it happens today, but only through credit cards that don't direct sweep to Qantas.
For example, someone accruing membership rewards points on Amex can get status through spending their CC points on QF flights (exchanged at 1c per point on commercially available fares). Easy, in fact it makes Anyseat awards at the moment poor value in comparison - take a $150 fare MEL-SYD .... assuming classic award not available, available using Anyseat award using QFF points for around 15,000 pts or via AMEX MR for 15,000 points. As Amex books a commercial fare you get 1,000 pt and 10 SCs, but for anyseat you get nothing.
For QF Anyseat Awards (whose value often hovers around that 1c per point mark as well), it makes sense - indeed in the long run is important to remain competitive with the other "anyseat" rewards programs out there - to offer this as a benefit. The upside is really for those who currently accrue most of their points via flying or means other than credit cards.