This is increasingly true as Google is moving further and further away from AOSP, and I think it's eroding the appeal of Android as a whole.
That said, at least Google apps talk to just Google. Samsung apps for example have been shown to connect to numerous different analytics services and ad networks even if you spring for the most expensive devices they sell which isn't great.
That said, at least Google apps talk to just Google. Samsung apps for example have been shown to connect to numerous different analytics services and ad networks even if you spring for the most expensive devices they sell which isn't great.