The distinction you seem to be making between data that Google has and data that is "revealed to anyone" is misleading in my opinion. No matter who has the data, "privacy" is concerned.
Also I need to call you out on your blanket statements that Google developers have no access to that data (clearly, some would, as part of their jobs, also [1]), and that data is not revealed to anyone (seriously?). As of January 2014, this position is not defensible and you might have to face a more nuanced, and possibly inconvenient reality.
http://gawker.com/5637234/gcreep-google-engineer-stalked-tee...