Australia is the one that is dogged by insecurity by picking a fight with China for no good reason.
This is what we call in NFL football or American football, trash talking.
In other sports, trash talking can result in a penalty. In hockey, if players are talking too much, the referee can always give them an "unsportsmanlike conduct penalty."
Trash talking is a part of football, but some players just shut up and play, and let their play do the talkin'.
Australia is trash talking so much because it is clear they not in the same league, as China or America. The trash talking makes no difference.
What happens on the football field when a player can only trash talk but cannot play? He gets no respect because he sucks.
Everyone in Asia can see Australia cannot play. No talent (ie. political skill). The trash talking cannot hide that.