I don't think that anyone should be too surprized about this court ruling. Freedom of religion has been upheld in this particular instance numerous times. If anything is surprizing, it is the fact that it is still being challenged. But, if nothing else, it wasted a lot of Watchtower time and money.
As for the do-not-call lists, my experience is that most Witnesses love the opportunity to skip a house. In fact, in my day, I would have loved a territory with nothing but do-not-calls. Individual Witnesses may have had greater or lesser respect for the requests.
For a while, I was the territory servant in my cong. We scrupulously recorded, followed, and transcribed the do not call houses on the territory cards - much like the monks who copied the Bible.
However, every two or three years, the service overseer was supposed to visit the do-not-calls, to determine if they still lived there and were still of the same mind. I don't know if this happened.