Actually it strengthens it as you can see from attendances that quality of stadium, even in suburban tips has a direct correlation with attendances. Not to mention that for Penrith to keep growing its been identified current ground needs replacing with a brand new 30k stadium lol
Belmore is the outlier as a one off nostalgia venue. Thats the only time these grounds should be used. Rest of time clubs should be in 20k plus modern stadiums. I mean 10-12k avg's, really?
You don't know anything about Sydney. Stick to Perth & hull & other back waters