Chiang Kai Shek was no saint, he wasn’t pro democracy. USA pressure on Taiwan had a lot to do with how the island evolved after Chiang’s death (and his son happened to be a bit better than dad). Korea had a similar evolution, actually.

The soviets were involved in fueling both the CPC and KMT, actually, in the early days anyways. The KMT even got lots of help from Germany before they made an alliance with Japan.

While China would definitely be different, it’s not clear it would have been better.