I disagree. Since our classification scheme arguably has next to zero effect on someone who isn't inside Australia, their opinions on what we decide to enact are irrelevant and nosey. A variation on "Why should you be able to tell me what I can/cannot do in bed with my wife?" really. It'd be different if we had any effect on the ability for foreigners to see or enjoy what they want in their own markets.
I should be clear and make a distinction between my support for the classification scheme as it currently stands with it's clear benefits in informed choices for parents and transparency that it is run with, and my opinion on the proposed internet clean feed filter, which is one of disapproval.