I think the term you’re looking for is covert racism.

I’m Canadian and yeah… Even IRL a lot of people refuse to admit it.

I’ve been forced to educate people about the Chinese Head Tax and the 2 very distinct Chinese Exclusion Acts and how that on top of Yellow Peril still affects Chinese disapora today in government regulations including immigration and social programs, which is super traumatic as a Hong Kong diaspora who is also trans, queer, female-bodied, and neurodivergent.

I’m not sure why you’re confused because the first sentence of the article literally says:

Australians have resoundingly rejected a proposal to recognise Aboriginal people in the country’s constitution and establish a body to advise parliament on Indigenous issues.

Which sums up why they were trying to make this happen, which also sounds like they don’t have an official group of Indigenous peoples advising the government on anything that is an Indigenous issue, which is super bad.

Also, from the article:

Opposition to the voice seized on this ambiguity, adopting a campaign slogan of “if you don’t know, vote no”.