Agree with your last comment. Surely the very selection of an Indigenous team is itself racist? Is there any team in Australia selected from purely white Anglo Saxons?I don't know about that, I can understand some areas maybe wanting to have their own representation separate from the nation that they are officially part of, similar to the situation in the UK.
Obviously I'm not actually suggesting that any of these teams should exist (or that any of them ever will), just stating that I wouldn't have a problem with them existing if those areas could support a competitive team on their own and wanted one for reasonable geopolitical and/or historic reasons.
For example I'd have no problem with an Iroquois team like in lacrosse, or if Hawaii wanted independent representation from the US and could support a competitive team I probably wouldn't have a problem with that either (under the right circumstances), Catalans being separate from France and Spain is another that I would support (again under the right circumstances).
I'd even be fine with an Aboriginal or Maori tribe/confederacy of tribes (I know no such confederacy exists at least in the case of Aboriginal tribes) having their own team if they could support it.
However I have serious, serious problems with racialist teams that people are only eligible for based on race, I'm even uncomfortable with the Indigenous All stars if I'm honest.