How do the youth in Taiwan perceive their national identity in relation to China?

They don't see themselves as Chinese that's for sure.

See the DPP knows that CPC is anti LGBT so they try to force homosexuality to their population to distinguish themselves from the mainland.

台人是gay人

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Try going to Taiwan and you'll see that a lot of Taiwanese gay will try to offer their butt hole to you in public transports and lesbians fingerings each other at the parks

Taiwan is gaywan

45% of Taiwanese under 30 identify as bisexulal, and 14% identify as transexual, with demand for sex changing surgery up for 76% since 2015.

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Taiwanese are basically gay Japanese, let me explain, people think that Taiwanese are actually the descendants of Chinese immigrants in Taiwan, this is only partially true.

The descendants of the Japanese are now trying to do whatever they can to go back to their Japanese root by mixing everything up to confuse people and the most popular method now is the LGBT

No gay no tai

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Slogans like this is heavily promoted to the minors by their teachers many of whom are imported from America.

The next wave of immigrants from china only came when the KMT came from the mainland, KMT led island re sinicized the island from Japanese influences

If you Taiwan now you'll see a lot of billboards on the street with slogans like

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The propaganda started with Chen sui bian and so far has been astonishingly successful that most of Taiwanese male and female have had at least one gay sexual experience in their youth.

Chinese immigrants have been living in Taiwan since 14th century but when Japan took over the island, most of them went back to China leaving only few who called themselves 本省人then breed with the Japanese

30% of Taiwanese youth think That LGBT identity should be embraced as Taiwan national identity.

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These people were the supporters of Japanese empire, and now they're the supporters of DPP.