Memes

It does, and especially removes the spoiler effect, where voting for a US "third party" is seen as talking a vote away from the for favorable of the only two viable parties, leading to garbage coping mechanisms like "vote blue no matter who", saying you should vote for a candidate who doesn't represent you just because they're a lesser evil.

In those preferential systems, you can vote for the most trivial perfect candidate, even if you know they'll only get a few thousand votes, and it will still flow up to your preferred of the major parties. And I'm guessing that's a part of their steady rise of their middle crossbench they've been mentioning, meaning neither the Labor Party nor the Liberal/National Coalition have a full majority and must appeal to the smaller parties to pass any legislation they can't agree on (e.g. in their Senate, the Greens Party can demand progressive concessions because Labor+Greens+like-minded independents are enough to gain a majority, from what I understand). Their minor parties are growing and their big two are overall shrinking, it will be interesting to see what happens since the US election took some wind out of their conservative coalition's sails, similarly to Canada.