Yup. We see that it's absolutism that gets both side in trouble. Sure the left thinks that it solidifies that privacy arg to claim it as an absolute right, but you are correct, taken to the extreme it undercuts the practical appeal of the argument. And again - it goes back the truth that nobody knows and anyone who claims they do is a liar or arguing from faith rather that fact. Faith can be a wonderful thing in life, not so much in law or politics.