Modern anarchists are rarely the extreme libertarians that most non-anarchists think they are. Back in the early 1900s they were idealists firmly rooted in the ridiculous philosophy of Rousseau that societal structures were the main force for evil in the world, and that people would naturally form a healthy society if we were to do away with the current system.

Modern anarchists have come a long way from their roots, and have given the philosophy a lot of thought & refinement. That's why you have all those weird anarchy sub-groups, like anarcho-capitalists, syndicate anarchists, and Christian anarchists. They all have slightly different takes on the "anti-heirarchy" central thesis of anarchism, and most of them introduce (or acknowledge) that *some* sort of organization will occur.

I don't think any anarchist sub-group has satisfactorily thought out their philosophy, but I will grant that they've at least *tried* to grapple with the core problems inherent to their ideology. In short, they're already miles further than your average Libertarian.

The weird thing is in Australia they have no incentive to be like this in politics. It's like 5 year olds pretending to be like the UK/USA, and the global stage couldn't really give a fuck what 20 million colonial people do.