I'm reminded of the lyrics: You can check out anytime you like but you can never leave. I suspect even if facebook, google, apple, etc let users "opt out" expl

I'm reminded of the lyrics: You can check out anytime you like but you can never leave. I suspect even if facebook, google, apple, etc let users "opt out" explicitly, they use other methods to implicitly track users. If all else fails, they can buy data to "fill in the blanks" later on.