You have it 100% backwards.
Young people in Taiwan overwhelmingly do not think Taiwan is part of China or that they are Chinese.
The dwindling number of Taiwanese that favor unification (not as part of PRC) are mainly older.
Perhaps. All I am reporting is, the view expressed by two direct reports I have who live, or are from there. One is 26 and currently lives in Taiwan. The other is 52, is from Taiwan...still has family in Taiwan, but works in Shanghai. He travels back and forth. He spent the equivalent of 3 months in quarantine last year. Maybe, the isolation warped his opinions?