China began its period of peaceful development and opened up to Western markets while the US was bombing Vietnam and Laos, while there were coups in Indonesia and Congo and Chile and throughout the third world, and while the US was pulling farther and farther ahead in the Cold War. It implemented sweeping reforms that rolled back collectivization and opened up its people to Western exploitation.
In hindsight it's clear this was a strategic choice to buy time to peacefully develop their productive capacity and geopolitical strength, and it worked, but for fourty years it looked like a betrayal of the revolution and liberal revisionism and capitulation to capital etc etc
Even now, it seems China would be fully willing to go back to collaboration with the US to continue peaceful development. China will let allies fall and let genocide wipe out other potential allies without taking action, won't support revolutionary guerilla movements or risk international peace to engage in international militant struggle, and will let their own people be used as cheap disposable labor 48+ hours a week making US toys.
The extreme caution is definitely frustrating, even as China keeps being proven right and their caution keeps paying off. I think Maoists will have to confront the fact that there's a new Cold War eventually, and I'm interested in seeing how they respond politically.