Only 7.9 percent of all of their sales is outside of China. They can generate fancy numbers galore on domestic soil where they have both production subsidies as well as government aid for buying said vehicles, but it's very unclear how they're going to fare outside of China.
Only reason they wouldn't take off outside China is the astronomical tariffs the West are putting on Chinese cars (100% in the US). Though depending on the wording, they may be able to just build a plant in Mexico and take advantage of NAFTA. I can't tell from the whitehouse post on the tariff if it's tied to country of the manufacturer or just country of origin (usually it's origin).
They're dumping domestic overproduction on foreign markets. You do that long enough and you can weaken your foreign competitors in their domestic strongholds. This can destroy high-value domestic jobs, lead to atrophy of expertise, and is especially bad to "strategic" sectors of the domestic industrial base.
Tariffs are a tool to protect domestic markets against dumping. Every other nation's automotive companies are free to compete in Western markets because they're not actively engaging in dumping. Their competition strengthens domestic rivals because it is fair and on equal footing.
Australia doesn't care because it doesn't have a domestic automotive industry to protect, so Chinese overproduction is essentially just foreign subsidized stimulus to the Australian population.