What I meant is that both the concurring opinions (signed by 5 collectively) agreed on this same point:
> society’s expectation has been that law enforcement agents and others would not—and indeed, in the main, simply could not—secretly monitor and catalogue every single movement of an individual’s car for a very long period. In this case, for four weeks, law enforcement agents tracked every movement that respondent made in the vehicle he was driving. We need not identify with precision the point at which the tracking of this vehicle became a search, for the line was surely crossed before the 4-week mark.
So no, I'm not arguing from shaky ground. And no, ample attitude is warranted against people not just advocating for unbounded state surveillance, but insisting that it is already a foregone conclusion.