Why? Just because he was born in SA?
FTR - Goodes represented Sth Australia in soccer in Under 12 then Under 14 rep level. But - he never played any competitive Australian Football at all in Sth Australia.
Goodes moved to Mildura, Victoria at aged 11, and gave up soccer due to the constant racial abuse he copped, and first took up our game. He then moved to Horsham with his family and lived their until drafted by Sydney. He still holds a swag of athletic records at the Horsham SC and, of course, stood out in junior footy then the Ballarat Rebels (but still lived in Horsham).
So, by SOO rules, he's clearly Victorian.
Sure. I'm not saying he shouldn't have played for Victoria. Just pointing out that even a slight change in the rules could have changed things quite a bit. How much more will it vary over time?