Oh for sure. The reason Taiwanese dislike mainlanders ruling them so much is probably more due to Chiang Kai Shek than Mao Zedong. They would just have nothing to do at all with Chinese politics, they don't want to be ROC as much as they don't want to be PRC.

The USA was actually on China's side about supporting Pol Pot, with Vietnam against. Things are definitely blurred in history.