There' only one way to find out. The Club insists that any restrictions are not to do with censorship, so I would politely let them know their own policy. Link below.
Plus, according to the media release, the banner restrictions are there because of Georges River Council. The Club says they aren't the ones making the decision.
The St George Illawarra Dragons refute any suggestions of involvement in the decision or censorship, and would encourage all supporters intending to bring banners to future games to utilise the banner registration policy that's in place.
A reminder to all St George Illawarra Dragons members and fans that the club has had a banner and flag registration policy for several years in name of assisting ease of entry to supporters on match days.
www.dragons.com.au