I am a Racist, page-86

Rickh, the attachment of Aborigines to the land goes a lot deeper than the top 6 feet of it we walk on spoil!

As for disputing that Aborigines were the first Australians, even that greeatly exaggerated myth myth has been completely discredited as 'contaminated DNA'.

"New DNA technology confirms Aboriginal people as first Australians"

"... But now, Professor David Lambert, from Griffith University, and colleagues, have used new DNA sequencing methods to re-analyse the sample from Mungo Man, who was found in the World Heritage-listed Willandra Lakes region, in far western New South Wales.
"The sample from Mungo Man which we retested contained sequences from five different European people, suggesting that these all represent contamination," he said.
Professor Lambert said the latest findings, published today in Proceedings of the National Academy of Sciences, confirmed earlier concerns with the 2001 report.
"There was a lot of suspicion at the time amongst a lot of international researchers in ancient DNA that there was a distinct possibility the results were due to contamination," he said. ..."

http://www.abc.net.au/news/2016-06-...ginal-people-as-the-first-australians/7481360