The left-wing/liberal/progressive position on individual privacy runs something like this: “If you’re not doing anything wrong what difference does it make if we track you?”. The flaw in this position is the assumption that Big Brother has a fundamental right to know everything you do. I can’t find that in my copy of the Constitution, can you?
The real privacy paradigm should be based on “Need to Know“, much as national security information is (supposed to be) controlled. Suppose “the engineer” works for a defense contractor and has a secret level clearance. That doesn’t mean that this engineer can go around accessing every secret document in the company because access is limited to the classified information needed to do the engineer’s job. An engineer working on fighter jet navigation would have no need to access information on submarine nuclear power plants, for example. Last week I bought a bag of chocolate chips. Does Big Brother have any need for this information? If not, leave me alone.
If privacy was based on “need to know” rather than “want to know” we’d all be both freer and more secure.