If in 1949 or shortly thereafter, the ROC/KMT held universal elections for their actual citizens (Taiwan and the minor islands) then there would be some validity to Dirt's claim. But after 45 years, thousands of lives, exile, torture, assassinations, secret police, 3 unelected dictators, protests, martial law, and soldiers firing on civilians - credit for democracy goes to the people of Taiwan, not the regime opposing it.
I would say the same about the Japanese colonial years. Less oppression is not a substitute for enfranchisement.
As a Taiwanese person (well, Taiwanese American) who does identify as Chinese, it depresses me that democracy has only found expression in Chinese communities that were colonialized (TW, and the less democratic versions in SG and HK). It doubly depresses me that more Chinese don't seem to value it, but I accept that my values are not evidently shared by most of my co-ethnics (and hence my relative comfort with PRC rule for TW).