You seem to be confusing/overgeneralizing the understandable resentment of "some Cantonese" who likely had bad experiences of postcolonialism and/or authoritarian-revanchist state policies. If Hong Kong diaspora has a poor reception towards newcomers to their local microculture, maybe it's because the people attempting to engage are not treading lightly with those actual historical legacies in mind.
"Taiwanese lectures Hong Konger about Hong Kong" is a recurring meme on Threads among local Hong Kongers. I didn't expect I'd experience one here.
I mean, I know I am supposed to refute your point with rational points, but I really don't know what to say except that you're wrong, and you're confusing the cultural divide between Cantonese speakers and non-Cantonese speakers, and the political tensions between Hong Kong and mainland China.
Note that I never said "Hong Kong" in my comment because the majority of Cantonese speakers are actually in mainland China.
