Don't get yourself in a tiz there old mate. No one ever said it was wrong to be proud of yourself....and if you so happen to be white well so be it. What does upset others is when white is proclaimed to be the most 'acceptable' colour.
The manner in which you list Aborigines, Kiwi Australians, Lebanese Austalians etc and then in the following paragraph you say, "And then there are just Austalians" really shows your hand very, very clearly.
The simple fact is that you do not see those other groups as being "just Austalians". That is where your problem begins.
Australia needs a new flag that is representative of all Australians. The sooner the better...........
