Here’s the difference - Japanese and Australians are flooding each other’s countries. When I lived in Japan, I never pretended to be Japanese or usurp their culture. I was an observer and a very, very small minority.
Compare that to some immigrant groups in Australia the at cry victim at every turn, pretend they are Aussies, and try to infiltrate the culture and destroy it from within.
I am happy look at a pond of koi - these fuckers trample through the pond, steal the fish, take a dump and then accuse everyone else of racism for calling attention to their disgraceful behaviour. Then they bring a dozen of their family and friends to do the same.
HUGE difference!