This position has changed 180 degrees in recent decades. The unification now KMT is promoting is essentially just give up and let CPC take over.
Notice KMT is a foreign political party that originates from mainland China.
Taiwanese people never had a say in that (Taiwanese social elites were slaughtered by KMT) before DPP became a real political party that's born and raised in Taiwan.
Ma Yingjiu's statement was to maintain KMT's legitimacy as a party in Taiwan, that is, through a country named ROC.
However, for Taiwanese. Our country is called Taiwan. And that's how we recognise ourselves long before 1911.