That's not what this case was about, though. It's about whether FB is allowed to log your behavior on their properties and use that to choose which ads to show you.
Right, and maybe that should not be permissible but this decision is about on-site personalization based on stuff like the interests you enter into Facebook yourself.
FB's like button, found on many websites, tracks you across the internet whether or not you click it.
https://news.bloomberglaw.com/litigation/facebook-to-pay-90-...