Getting off topic for the article at hand, but what's different in Australian plumbing in that area?
I've literally never owned a plunger in my whole life, and I don't know anybody who does. It baffles me everything I'm in the US and every toilet has a plunger!
Also, the showers mostly all have baskets under the drain caps to capture hair and stuff now.
It makes me sad and annoyed whenever I flush one of these toilets. The swirling doesn't do anything useful. It seems to actually increase the clogging probability because it typically manages to swirl 100% of the toilet paper together and then finally move it downward all at once for maximum clogging effect, which might be fine if the drain weren't ~2 inches across.
There are American toilets that aren't like this, but a shocking number of them are completely unreliable. I had a toilet in my apartment in California that, no lie, I managed to clog by blowing my nose. I used 3 Kleenex, dropped them in the toilet, and flushed. It clogged from that.