The other guy is from Taiwanese diaspora, and is fully west-pilled, hates mainlanders, hates the CPC, wants Taiwanese independence etc. they’re not sending their best clearly.
Hongkongers abroad are much the same, in my experience. Rabidly anti-mainland to the point that some of them proudly display the flag of British Hong Kong. It's too much even for the most anti-mainland west-pilled mainlander I've interacted with. Those back in Hong Kong seem to be more of a mixed bag, same with Taiwan. Probably more pro-mainland Hongkongers than Taiwanese but this is just the general vibe I got from observing strangers rather than asking.