They were definitely effected by the war, never said that they weren't, but hey they're all still around to this day (with the exception of the Steelers, so I guess that's eight clubs that were killed so Sydney clubs could survive), the same cannot be said about the teams from outside of Sydney.
They weren't let back into the comp because of public outcry, they were forced back in because of a dodgy decision in court that was quickly overturned on appeal, and frankly if they had been ejected from the comp once the decision was overturned then the league as a whole would be a lot better off.
That's not a slight on them or their fans, it just is what it is.
The N in NRL stands for national, the Sydney competition that it grew out of has been consigned to the history books.
If only entitled pricks like yourself would let the Sydney comp stay in the history books where it belongs we could all move on to bigger and better things, like a national competition for instance.
What I have is a deep disgust of people like you, that for your own selfish reasons would stunt the sport's growth (to the point that you're probably going to kill it) because it's not convenient for your frigging suburban club, not "angst" against Sydney.