You are excluded from playing Origin if you weren't living in either state prior to the age of 13 (with the exception being if your Dad played for either state.
This is discrimination according to the rednecks in this thread.
Well discrimination is simply recognising the differences or traits of people or things and making decisions/policy based on that so yes that would be discrimination but it is discrimination that most people would find reasonable.
Separating people (players) based on nationality makes sense and SOO is just a continuation of that concept at state level albeit the other states don't play the sport to an appropriate level to have any chance at fielding a competitive side so yes, some people are left out and perhaps eligibility rules need to be looked at in that example.
The point is though that no person is (or should be) excluded from participating in any national or state side based on race, culture, heritage or whatever you want to call it. They are only discriminated against based on nationality which, in the western world especially, is independent of all those things and ability (as in any work place). As loose as the eligibility rules are in international footy, nationality is often ignored too.
These 2 teams are picked based on race/culture/heritage and excludes all other races/cultures/heritages from having their own opportunity to compete at that level in their own team.