It's been reported elsewhere (though I have no link to hand) that the actual change isn't that Telstra are deciding to not implement it at all, but that they're considering only implementing the anti-naked-children bit of it, and not the other list, given that not many people are likely to stand up and say "Don't cut off my nekkid children!"
Of course, it'd still be a step in that direction (and, yes, once the tech's there I imagine quietly adding URLs wont be hard at all), but it sort-of goes some way to explaining why the other list isn't being mentioned.