"The Australian national anthem was changed from God Save the Queen to the boring but secular Advance Australia Fair in 1984."

And soon to "Arrival" by Abba.
There's no words, so no "God" or political bias.
But everyone knows the tune.

"And, of course, the Australian flag should be changed too"

Of course.
It's so self-evident you don't even need to present an argument why.

I think it's perfect.
We are the "Britain of the Southern hemisphere".

And one day, we'll probably unite with NZ (in self-defense of the only European societies in the region), so similar flags will be irrelevant.
Yes, we will. "Of course".

What an emotive bit of claptrap, by someone who obviously hates our country, & probably has an axe to grind, or can see a bob in it for them.

Rather than trying to turn my country into a better place for Muslims to live, I suggest you go join the other smarties, like Malcolm Turnbull, take over Fraser Island, & start your own country. Just leave us out of it.

Correction: the Church's charity, comes not from her bulging coffers, but from her devotees.
Rhrosty.