I'm not in any way affiliated with Google but a Google employee has strongly and empathetically suggested to me that the ad people (and algorithms) have absolutely no access to user account data.

That is the reason why AdWords location targeting is kinda broken currently (at least on non-mobile devices it relies on IP geolocation). If one day AdWords start serving geographically correct ads for everyone, that's the day when the ad people got access to account data.