It dates back at least to the 1980s, during the Hawke era.
A Labor party that cast working people as “bludgers”. That concocted a Neoliberal Accord with the ACTU to suppress the rights of workers, as a means to keep wages (and worker power to negotiate better conditions) down. That devastated social support by making unemployment benefits far more difficult to obtain.
All this was an “unleashing” of the private sector the effects of which still rage around us today.
https://jacobin.com/2020/10/australia-labor-party-neoliberalism-accord
Assertion misses the point: Most Australians whose homes need to be made more energy efficient, are renting and have no agency in doing anything like that to their homes.
Telling those people "you could save on your power bill by modifications to your home”, is just cruel. We know our homes are energy inefficient, we can't make the changes required.
What's needed is legislation that mandates the landlord must pay for those improvements, before they take any more money from the renter.