US along with their western allies, waged a civilizational & race war against China and by default asian from east.
Last thing Asian pacific needs is Asia pacific people dying in wars and their state ruined,that would embolden the west which was only checked due to rise of Imperial Japan in the past.Chinese nationalist is being short-sighted by limiting their views toward current Japanese policy toward US ,instead of overall future balance of power .
And Chinese has been dumbed down from rational initiative toward Japan,by anti-Japanese soap opera since their birth.
China shoot itself in its foot when China blocked rare earth to Japan over the arrest of fisherman who crashed into Japanese coast guards. China killed billions of revenue and at least 10% of market share with that nationalist appeasement move.
Japan needs to be tackled but it shouldn't face loss of territory,economy and demography for balance of power against west,Japan might be pro US but it's still an eastern nation,its very existence pays dividend in balance of power.