Taiwan, Japan and South Korea are so weak on protecting their own borders, because the US actively sabotaged their domestic defence.
I'm no friend of China and much less the Soviet Union, but if anything, you can see that the reason why North Korea at the beginning of their war basically steamrolled the South was because the Soviets left them with a functional military and the US did not.
Keep in mind that the US didn't work against China receiving nuclear weapons, but actively sabotaged any nuclear development in Taiwan, both locally and at the UN.
China actually started releasing a human rights report on the US a few years back.
I'm not saying China is right. I'm saying that if you want to be taken seriously by the global south you better get your act together. But I actually fear it's too late. One thing Trump did well was drop the curtain on the whole Charade albeit probably not intentionally. Remember when he said they're leaving Syria, but will still occupy the oil fields?