To put it into perspective: an upside down American flag is a recognized signal of dire distress which is often meant “extreme danger towards life & property”. Historically, it was only flipped when sailors signalled to allied forces that they were in immediate peril (such as fire, mutiny, or sinking) needing assistance.
Nowadays: both individuals & groups started adopting the inverted flag to mainly express political discontent, dissent, or a deep concern for the direction of the nation. I mean, what happens if you inverted the Australian flag either during demonstrations or if the individual has distrust towards the government?
I see someone waving an upside down Aussie flag - or indeed waving it in any orientation outside of a sports event - and I recognise the waver is most likely a fucking right wing nutter
It’s also a fairly good indicator generally that they fucked around their entire life and always find someone else to blame