I can only reflect the statements made by aboriginal leaders. The returning of aboriginal remains isn't a mere gesture, it is of considerable spiritual importance. His mob were particularly aggrieved that his remains, remained within museums when they should rest in his ancestral grounds and allow his spirit to wander the lands of his birth. It is core to their spiritual beliefs that date back 40,000 plus years.
This also marked a different approach in anthropology which is recognised by aboriginal communities as invaluable to their own historical understanding, but is now done in partnership and with respect to the traditions of the traditional owners of the land.
As for the "plight"? I think I can guess some of the things you refer to - Health status, incarceration rates, wealth status are likely to be in your list. Australia's history has been fraught with misdeeds against aboriginals. In the mid 1900s young children were removed from their parents in a gross act of paternalism - They are referred to in Australia as the stolen generation and a past Prime Minister provided a formal apology and compensation. In our early history our treatment and displacement was typical of European colonialism with episodes of cruelty and effective slavery.
Today Australia is attempting to bridge the gap. Health and education with dedicated resources for aboriginal groups are free but aboriginals remain well behind in health and socioeconomic status. Part of the issue is the remoteness of the demographic, and another is the needed balance between self-determination and direct action. The issues are far more substantial and complex but I don't wish to stray off topic.