I just think that details matter. All Cadillacs are GM, all Chevys are GM, not all GMs are either of those. But yeah, fundamentally, GM does this.

That's the world we live in. Too many data merchants, which makes it hard to maintain privacy. It's up to each of us to help those that don't know better by providing them with the information when requested, and for those of us that want privacy, to do our homework and ask in the pertinent places and ways, to achieve as much privacy as humanly possible. For too many people the trade off of convenience for more privacy is not worth it (my wife is unfortunately part of that group), and pushing them only makes them look at us like fanatics (which I am to a certain level). Help where we can, leave people that don't want to hear about it alone, and respect every perspective, regardless of if we agree or not. This will make for better interactions when discussing any subject in a constructive manner.