This page on the Australian Autism Alliance might give you a fair overview: A Snapshot of Autism in Australia
Generally speaking, I think our autism politics is a lot less polarized than it is in the US. We don't have a clear cut equivalent to Autism Speaks, although Nicole Rogerson's Aspect is probably the closest. I don't think we're as scapegoated and as hated as autistics in the US, people just forget that autistic adults exist. Recently Pauline Hanson has been running around claiming that vaccinations cause autism, and while all the media personalities and journalists have been condemning her comments no one has asked what autistics think of the situation.
Personally, I doubt I'll feel safe being public about my diagnosis anytime soon. There are still too myths and misunderstandings around to make that a good idea. Especially when you're looking for work.