One can only assume that the People’s Liberation Army has acquired a tad too much influence and control over the government policies. Backlash is in the air - and water.
Every country in the region, as far away as India, now wants the US to increase its presence. The newly elected Japanese government, while not actively hostile, is discussing rearmament and vows to take a more forceful stance toward China (not good considering the history involved). The only exceptions for China are Pakistan and North Korea, not exactly the best group of friends.
This could not possibly be the result desired by Beijing. It is exactly a case of “not what I say, but what I do” and what China is doing is irritating everyone – from Japan to South East Asia to India.