Out of curiousity, why would that be considered offensive to Australian aboriginals?
This, indigenous people everywhere always claim to be the first peoples and that they originated in whatever area they are indigenous to, even if it's obviously not true. It causes a lot of problems for science because they want to claim ownership of bones or artifacts from cultures that predate their own and prevent those items from being studied.
Without safeguards like that you end up with HeLa and such.