I think it's probably actually better for the world that China isn't painting a huge target on it's back by supporting every single revolution everywhere.
The Soviet Union ran itself ragged with all the military spending, including to places that were basically socialist in name only to get weapons from them and it mostly resulted in a lot of violence and death and didn't create any lasting communist governments for the most part.
Beating capitalism by undermining the global economic systems seems a better way to go.