No, what you are posting is all puerile racist crap. A quick google search on what your pdf's contain quickly show you it's not giving you the full story and twisting the truth.
Your last crap post. First PDF states the Welcome to country isn't an indigenous tradition, it was something Ernie Dingo made up in the 70s. A twisted half truth. Here's what Ernie says about the Welcome to Country he "invented"
Welcomes to country between Indigenous Australian communities have a history of thousands of years, but Dingo and Walley say their’s was the first to be performed in the country for non-Indigenous Australians.
Back then, Dingo and Walley were part of the Middar Aboriginal theatre, with a show billed at Perth fringe festival. They were asked by a group of Polynesian performers – two Māori and two Cook Islanders – to give them a welcome to country, as their spiritual beliefs dictate. After consulting with his community’s elders, Walley was given permission to welcome the visiting performers.
Dingo says before that occasion, “We couldn’t do it to white people because they wouldn’t understand, and there was too much negativity.”
Your other PDF about the restaurnant with no menu is again complete racist crap. A childish analogy to appeal to the lowest common denominator, designed to push the notion that the Voice is nothing to those who can't or won't think for themselves, or for the racists *smile* to forward around.
To use that Grade 2 analogy, The Voice referendum is voting on whether we should build a restaurant, not choosing what items are on the menu. The work on the menu starts after it's been agreed to build the restaurant in the first place.