Hey Terence,
Your confusion is most apparent, allow me to help :
1) Defaulting a technology to on isn't the same as mandatory. There's no proposal afaik to make such filtering mandatory or I'd be AT YOUR SIDE IN WAAARR!!!
2) DNT has been implemented by browser vendors voluntarily already, the ORG's influence on this global movement is quantum or nothing. Esoteric factors like WP8 sales will be a bigger influence than the ORG could ever hope to achieve.
3) If the government can't internally settle on standards, I fail to see what that has to do with an external body, especially the ORG.
Did you stop and read the articles from the ORG website you've cited? These are people that in the face of the "snoopers charter", question MP's about whether 39% or 54% of parents have porn filters on at home. Was that the question you would of asked at that juncture? Are these links really representative of your views on digital freedoms? It was a churlish read from here - if you get down to quibbling with an MP over 15% I'd suggest you've lost your war of the worlds already. Check out the comments section of the pages you've posted too - 6 people arguing about what causes them offence and what the punishment should be, that just about sums it up. Thanks for such a sterling demonstration of my point!
ORG members use scary language (and epic music it would seem) to fight for a world without copyright and an internet with scant/no regulation. If people want to attack the snoopers charter they'd be better off joining the Lib Dems and pressuring Parliamentarians instead of joining a group that actively seeks to destroy UK creative industries through the deregulation of copyright.
It's ironic that the ORG's scare tactics have made them look, to me at least, like the tinfoil hat wearers of the internet. This is because they rely on overblown, oppressive and dark language to prove their point. I'd suggest that people use the democratic framework to shape this type of regulation rather than calling on the Earl's of Freetardia. There are far better human rights groups, such as Liberty, that don't have these issues but are fighting against the Bill.
"The people's front of Judea - splitters!"