They will do it anyway and we'll just get VPNs
Is what most IT minded people are probably thinking.
We have seen it so many times in the past, that we know no matter how much public opposition there is to something, the govt will press on with it anyway or the best we can hope for is reduce it a bit. For things like PPL (paid parental leave) scaling it back might be fine - but data retention is really a all or nothing proposal.
They just keep telling us that this will fight terrorism, and your un-australian if you don't want to fight terrorism.