And - what about those who won't?
Those who won't, that is, do anything to stop their children being able to access pornography.
Our legislators seem to be of the view that parents will apply a filter. Of course, some will. And - some won't.
Not all parents are responsible, some as we know are people who are the complete opposite.
The children of those whose parents won't filter their online access will have access to pornography, and so will their friends, some of whom will be children whose parents have opted for a filter.
If we take any notice of the real world, children will still be able to access pornography whatever their individual parents do in their own homes.
Whether that matters or not is another discussion, but this decision will not make any difference to the ability of children to access pornography.
So - a government that continues to live in cloud-cuckoo land.