I'll use the analogy of being overweight.
To a limited extent it can be hidden through choice of clothing and so on or even wearing tight fitting purpose designed undergarments.
Ultimately though that only works to very limited extent. If you're 5kg heavier than ideal then you can probably hide that but not if it's 50kg. A point comes where the problem's too big, any attempt to squash the fat in one location just makes it more obvious somewhere else.
Now applying that to Australian politics I see a very similar problem. The harsh reality is we've an assortment of serious structural problems that have grown to the point they're not easily hidden, indeed they're blindingly obvious.
Trouble is our politicians are prone to first order thinking. If the problem is people can't afford houses then their "solution" is as per your example or it's handing out stamp duty concessions and so on. Trouble is, that's really just swapping one problem for another.
If we step back one order then the problem is that we're not building enough houses relative to demand.
If we step back once more then we find the problem is the high cost of building a house in the first place, a rapidly growing population, and that we've only a small number of cities to which most people are moving.
If we step back once more then we get into issues of the funding basis of utilities and upfront charges on new properties, land release, land banking, tax collection on new homes, a lack of tradespeople, loose lending standards, and so on.
Step back again and we're now talking about the relatively shallow economic base with limited opportunities to raise taxation revenue, we're talking about the demise of those things that historically trained most trades people, and we're talking about an economic structure under which speculation has become a more reliable way to wealth than production.
Now if we step back even further we find ourselves looking at the education system, both tertiary and secondary, and we find ourselves looking at the structure of the tax system, the "hands off" approach to economic management that's seen the decline of secondary industry, and so on.
Now my point isn't on the detail but that we're not even looking at it. Our parliament seems to be filled with people who wouldn't, or even couldn't, join the dots on the above. People who don't grasp that telling ~13 year old high school kids it's uni or bust meanwhile losing our industrial base and handing out cheap credit has brought about the in practice impoverishment of a generation.
First order thinking isn't going to fix that or indeed any problem. It's trying to put a compression sleeve over someone's obese abdomen - either they can't fit it on in the first place, it rips open, or it ends with a trip to hospital (or worse). It's not a solution.