False. As stated by many DDP leaders, including CSB, the ethnic Taiwanese title is for anyone living here who considers themselves Taiwanese.
Japanese were the ones that dubbed Taiwanese Holo as Taigi. They did so because it was the lingua franca of the island for a good 200 years. People who really understands Taigi usually calls it the Holo language, however Taigi is still used because thanks to KMT brainwashing, most Taiwanese have no idea what Holo means.
We've been over this, but it seems like your mind refuses to pick up facts contrary to how you want to see the world.
So in your mind the Aboriginals who died in the 228 incident and White Terror period were like "Oh, you are killing us in the name of Chinese nationalism? Go ahead then, at least you are not pretending otherwise."
Koxinga definitely killed many Aboriginals, as did the Dutch and the Qing government. The Hakka and Holo formed local militias but mostly had skirmishes with the Aboriginals, but there is no evidence that the Holo ethnic group specifically committed genocide.
The local Sirayan in Tainan were recruiting ethnic Holo men to marry into their tribes as late as the 19th century. It was not until the mid 19th century did Sirayans began moving away from Tainan. They did so to avoid cultural assimilation, not ethnic genocide.
This news articles for example, shows that the Sirayans who moved east eventual still lost their own identity and language, and now only speak Holo, with many of whom identify themselves as Holo, even go as far as referring other Aboriginals as "Huan (番, Savage)", a derogatory terms in Holo. The same cultural assimilation also happened to most of the flatland aboriginals who stayed in the west coast, who make up the majority of Taiwanese and ethnic Holo population.
There's no denying that all Colonizers of Taiwan engaged in cultural genocide. It's a lesson for all Taiwanese to take charge and revival our own cultures.
Those are two separate matters, and they should both be addressed. The new legislature will push for a version of Autonomy Act that includes giving each autonomy a separate administration area from the existing ones. My guess is Tsai would want the Autonomy Act to pass before her formal apology to the Aboriginals in August.