I can only assume from your continued support for this ISP filter that you have not read the reports on its cost, poor performance, impact upon internet speed and unreliability.
I would also like to add that the concept of a clean-feed for internet is fundamentally flawed because censorship fails to address underlying issues. It's a little like putting make-up over an infected boil. If people want to they will simply go through or around the firewall, for all it is hardly a thorough block. Tighter restrictions won't stop it either.
The ethics of blocking websites other than paedophilic pornography (which is as far as I am aware the original selling point) are questionable at best. Sites such as Wikileaks provide an important democratic check on government activity which the public has the right to know. Others, like the legitimate websites blocked by the filter due to programming limitations, can and will cause damage to small businesses.
As a ploy for the concerned parent and conservative vote it's clever, but a waste of money, especially to make it mandatory. Let those who want it for their homes have it. Let the rest of us try for free speech instead.