As an Aussie living & working overseas I'm still not sure if it applies to me and makes me a liability? I know they can't enforce it unless I go home but I will someday
I'm also an Australian living overseas, have worked on many sensitive projects that would be of interest to the Australian government and its masters, and I'm quite prepared to give up my nationality over this issue.
Australians will never be afforded an opportunity to overthrow their government, nor will we get the revolutions our demonstrations hope for.