The term suggests that some people are getting money from the government they are not entitled to and that they do not need.
With the tax system being such a mess of contradictions there is a current requirement to try and balance the load.
We have a system where I can get a medicare funded eye test but have to use private health insurance to go to the dentist; a system where private schools receive billions of dollars from the government every year but my kids' primary school cannot afford a new coat of paint; a system where washing a pair of overalls is tax deductible yet washing a suit isn't; a system where a 1st home buyers grant inflates the cost of new houses and others claim a tax deduction for spending too much buying investment properties, etc etc etc.
The tax system in Australia is a mess. It has been so for a long time and doesn't seem to be getting any better.
Until such time as the tax system is simplified and sorted out there will be a need to balance the load. Until such time as the system is sorted out there will be payments and imbalances and unfairness.
Fix the system, don't insult the tax payers.