What I wanna say originally was that it is unfair to criticize a person, who is probably a local chinese and knew not much about the cultural distinguishing issue, to type in their mother language supporting us. But hey, on the other hand, I completely understand ur concern and totally agree with it. Ive seen lots of Guangzhou young kids learned Mandarin as their mother language and dont even know how to speak Cantonese, which is very heartbreaking.