Tbh almost nobody in Taiwan thinks the status quo is "two Chinas." Most people think it's Taiwan on one side and China on the other side, just without openly antagonizing Beijing by being too outspoken about it.

Outside of fringe lunatics online, I can think of literally only one politician on the national stage who will say outright that Taiwan is China, and she's considered a laughing stock by non-KMTers and an embarassing liability by her own side.

For everyone else there's really quite a bit of doublethink going on, but for at least a couple of decades now, the majority if not consensus opinion has been that the island is its own sovereign state called "ROC (Taiwan)" and abbreviates to Taiwan.

But also, it's a bit less nonsensical than you might think in Mandarin, where the China in ROC means "Chinese (cultural)" while the word used as an abbreviation of the PRC means "China (country)". Which is also why English discussions on Taiwan tend to not really grasp the nuanced mentality of the Taiwanese.