I dont live in australia so correct me if i am wrong.

based on the videos I saw. Some of the australian politicans are worried to what their region will be like in 2030-2050 when chinese warships are close to their coast or chinese ships blocking their trading routes access.

There is also debate of australia building nuclear warheads to deter china in the future.

china may not be a threat for now, but in the coming future, it will be a different scenario.