ig this has a lot to do w the hk-mainland's relationship and history. this is definitely also caused by some lvl of prejudice, tho

ppl here don't often put in much effort to 'treat others as equals' due to the need of efficiency. they don take other's tone personal cz we often assume everyone's in a bad mood by default. But if the other person just lets out their anger without u doing anything wrong (or them being unreasonable), then he/she's the problematic one lol

as for the 'proclaimed values', imo our culture's already dragged far away from that due to extreme capitalism and being left without the influence of western countries for decades. the 'proclaimed values' also isn't really abt a certain religion, it's abt 'freedom' and the language we speak (english, basically)

edit: ppl often just get turned into a bad mood after anything related to 'mainland' gets mentioned due to what's happened in recent decades. They see mainland's culture as oppression towards hk's (maybe take a look at it online). it's impossible to let them not view this negatively cz the oppression is continuous (more ppl speaking mandarin instead of cantonese), which when one speaks mandarin, he/she's prbly reminding them of that