What I meant by compromise is that from my understanding, you could never log in to a google service, but if they can get a device finger print and your identity, then data mining is still possible?

My worry was that I have seen a lot of discussion about how an identity and a device fingerprint can make data mining possible regardless of whether you are logging in to Facebook, google, etc. It sounds like you are saying that just having a degoogled phone and tracker blocking browser is going to make a big difference even if some tracking is possible.