Axver, the issue (from my perspective) seems simple, if you are wondering why some people might have their feathers ruffled.
You said, "So frankly, I'd prefer to see Australians and New Zealanders at these concerts than Americans"
That sounds exclusionary and unkind. There are many Americans here on interference who were the first to congratulate you, who were so excited on your behalf, and who could not wait for you to post so they could see your reaction to the formal news. You do not seem to be returning that generosity of spirit.
It's also unfortunate to see what seems to be pettiness before the dates have even been announced...isn't there plenty of time for people to be competitive and mean with each other once the new legs start?