Even in the face of (their statistics)6 out of 7 people opting out, it's still desperately trying to be presented as the feature that will save you from the bad parts of the internet. The implication being that the majority of people (everyone who has opted out) are morally corrupt, bad people with no interest in "child safety" or "family friendly" features.
I imagine Malcolm Tucker from The Thick Of It screaming down to the BBC offices and making sure they use the official party line regarding "porn filter" vs "Great Firewall of Cameron".