I think the reason why the working class continue to undermine themselves (especially people from the older generations) is the main stream media channels (9, 7, sky, any Murdoch newspaper) are owned by billionaires with vested financial interest in getting the working class to vote against their own financial interest, by convincing them it is good for the economy, when really the billionaires consider themselves to be the economy, and what they mean by it will impact the economy is that it will impact them.

This is why those news sources have always actively promoted the LNP, while actively demeaning the Labor party. They don’t even need to say any of these things outright, they get away with it by allowing LNP MPs to blame everything wrong on labour while the LNP are the government, but actively promote the LNPs active opposition as good when they aren’t in government. This is completely contradictory to how they neg Labor for being an opposition to the LNP when they are in opposition.

Ultimately, they created a cognitive dissonance within the working class to get them to vote against their own interests.