This is a pretty misleading comment that ignores much of the context of the vote as well as the different parties that vote for it. It's easy to point to the vote totals of two parties (missing out the Greens and Nationals votes of course, because that doesn't fit the narrative) and skip the months of complaining from the Liberal Party before they demanded an antiquated and expensive (AU$80 million) plebiscite. The Liberal Party was forced by the voters to pass this amendment, and they certainly didn't do it without a fight.