Springfield is a training facility, with a single grandstand that holds 650. Most/all other NRL/AFL clubs have similar, mostly paid for by state governments and contributed to by local government that want an extra 200 well paid people working in their area. It has nothing to do with the stadium for the Olympics. A bigger or new rectangular stadium is not required for the Olympics, that is why is is not near the top of the agenda.
The Gabba needs replacing within a decade anyway, so by combining that with the Olympic build it will actually be cheaper in the long run and leave more money for other projects.
I think we all agree that 60k is excessive. 45k - 50k is perfect.
A new or upgraded rectangular stadium for Queensland’s number 1 sport will be a vote winner and will come soon enough after the Olympics.