Yes, we are using the term "big data" differently. I'm not opposed to your enthusiam regarding the emergence of technology that enables society to know enough about every individual on the planet to (1) locate them and (2) profile them psychologically. Capabilities per se are exciting. But technologists often end their inquiry there, often because they make their living by developing technology. But the inquiry must not end there.
Does it really not concern you that there is now no place to hide? Responding that you have nothing to hide is not adequate, because exercising freedom often requires defense of freedom, and defending freedom might well require secret acts by many individuals.
If technology has eliminated the ability of individuals to defend their freedom, such freedom as they currently have will not endure for long.