So? Bolsonaro is an integral part of today's Brazil. Does that mean being anti-Bolsonaro equates to being anti-Brazil?

It's completely disingenuous to suggest that recognizing the horrors of an oppressive nation-state equates to some sort of bigotry against the country itself.

You will note that I suggest no such thing!

Chinese culture is older and broader than CCP's China†. E.g. here in San Francisco our Chinatown is older than the state of California‡.

† https://en.wikipedia.org/wiki/Overseas_Chinese

‡ https://en.wikipedia.org/wiki/Chinatown,_San_Francisco

Assuredly! I was careful to use the phrasing "is an integral part of", in acknowledgment that "China" is vaster/broader/older/etc.

Not in Taiwan!

If you are completely, militantly and with your entire being opposed to it, it is in fact still a part of you.

Is Taiwan China though? (mostly non-rhetorical, honest question)

No, it is not.

The people of Taiwan don't want any part of CCP China, and in spite of a lot of noise about "One China Policy" the only people arguing right now for reunification are Xi and the cadres.

Uh, the government of Taiwan considers itself a successor of the Republic of China and claims the mainland, just as the PROC/CCP claim Taiwan.