It's Orwellian doublethink. Google will go miles out of its way to convince itself it gives a damn about user privacy, when it obviously does not give a damn about user privacy. Google always finds a way to justify studying users like lab rats. For Google, they believe that they are inherently in your circle of trust and that they are allowed to know anything they want to know about you because they are by default, up to nothing but good.
Google fundamentally does not understand that keeping things private means keeping things private from Google.
If you aren't paying Google, then they are harvesting your attention, activities, preferences, and future spending habits to eventually sell to the highest bidder.