You'd be surprised, some people are actually completely unaware of how a bunch of basic things work in the west. My younger cousin, who had never left China and is also extremely offline (for a zoomer), once asked me what's the deal with lawns. Like "Who maintains them? Is it like plants in parks? Why are they there?". The more I explained it, the more confused she got.

So you can't not have grass, everyone has grass. But it also can't be too long. And you have to spend extra money keep it alive in a drought (which Australia experiences fairly frequently). And you have to spend money on equipment to cut it, or spend more money hiring someone else to cut it. If you're renting, not maintaining the landlord's grass will get you in trouble and possibly evicted. And you have to keep weeds out.

Now, she was 19 at that point in time, so fairly naive. But still.