Sorry but this is cope. Why do you assume the build quality must be disastrously bad? In Australia where there is no tariff on Chinese EV's there are many Chinese vehicles on the road now -- this logically suggests an expansion of repair support will trickle into Australia also.
China is not just beating the U.S. on price, they are beating their manufacturers on quality and features. I'm not suggesting Toyota levels of reliability yet, but Tesla doesn't have a track record of reliability either. These Chinese EV's are easily as good as a Tesla, and better given advanced features like LIDAR that Elon cut from Tesla's.