[click170]

That's pretty disingenuous though, given that FB and Google both track you across the net whether you have an account with them or not. Logging out of your account doesn't stop them or increase the difficulty of them tracking you, or associating that trail with you.

[googlryas]

How does facebook and google track me if I, say, install ublock or adblock?

[Sylos]

That's actively taking steps to block their tracking rather than just not using their service. And while technically, you can use uBlock Origin to block everything from Google, that would result in many webpages being broken.

You're also likely to be using Google's DNS (8.8.8.8) without knowing, because some piece of software decided to hardcode that DNS server.

And your friends have almost certainly already uploaded your data to Google's Android backup service and to WhatsApp's database.