Very few users can detect that they are being tracked, so they can't avoid it. The tracking methods are designed to be undetectable; web beacons are invisible pixels; sites don't tell users: we track this info and share it with these people; even privacy policies usually are ambiguous, and they are too long and complex to read for every site someone visits.

because sites can be hacked or changed at any time, the ability of users to avoid offenders is basically zero.