You need to understand the context. For most 25-35 year old posters here, their childhood was watching India going toe to toe with a less than graceful, but all conquering Australian team. 2003-07 tests, sledging in Australia, Harbhajan abuse etc at a time when bar Ganguly, it was an Indian team of gentleman, means generally Australian team is reviled here.
As someone who really doesn't support one particular team in cricket, it's not surprising to see it. Especially when you'll are shit right now and that Australian team itself is poorly behaved when sledged.
Tl;Dr: Made your bed 15 yrs ago. Gotta take it now.