All I can find is plenty of stuff related to activism with some...

All I can find is plenty of stuff related to activism with some political ambitions and concerns about loss of heritage.
Also appears to be media savvy and sounds eloquent. He managed to bend the ear of Hamish Macdonald on ABC Breakfast:
https://www.abc.net.au/radionational/programs/breakfast/wa-traditional-owners-sounding-alarm-over-sacred-sites/12347804
He also managed to convince the Federal court that his mob are legitimate NT claimants.

To me, the EPA reports reads along the lines of Hatton telling Matt (I don't have to deal with NT) Shackleton that APC has to consult with all stakeholders and that includes Kado Muir.
KLL had to deal with a NT determination outcome in 2018 and that lead to a deal with TO's. If the Waturta are successful with their determination then it is inevitable that APC will have to do a deal at some stage. It simply means a royalty payment.
The more immediate question is whether the consultation process going forward has the potential to disrupt the development timeline.