"... As a Australian, how can I protest this? ..."
I'm not really the protesting type but pointing out in writing why the technical details will fail is one. A mate of mine did this as a senate submission for the last round of digital copyright laws. Even with a PhD in a related field I don't think the powers that be took any notice. But that shouldn't deter you. Pestering your local member might be one option.
I'm of the opinion that this is an "idealogical war" and all arguments are going to be ignored. The argument(s) against the "Clean feed" are framed in such a way that you may appear to support the very "Internet nasties" this ideology is attempting to eradicate. So be forewarned. I'm interested in 2 things:
- what Australians are not required to be filtered? Surely some Gov. departments and citizens are going to get raw feeds. Who watches them?
- if you opt of the clean feed are you being put on a "watch list"? A new form of unacknowledged surveillance.
There is a sinister outcome in that new legislation will be drafted