Does Safari’s "Prevent cross-site tracking" option ACTUALLY prevent determined efforts at cross-site tracking? (By, e.g. Facebook)

In other words: Does Safari’s "Prevent cross-site tracking" option effectively prevent cross-site tracking? (Is it for purpose?) I though it would work; are my expectations off?
Or, more specifically, I’m wondering: Why is Facebo… Continue reading Does Safari’s "Prevent cross-site tracking" option ACTUALLY prevent determined efforts at cross-site tracking? (By, e.g. Facebook)