I might be wrong about this, but it’s my impression that Facebook tries really hard to track everything possible, not just what you’re doing on FB/IG/WA, using

I might be wrong about this, but it’s my impression that Facebook tries really hard to track everything possible, not just what you’re doing on FB/IG/WA, using those silly like/share buttons people embed everywhere, and other technologies. Considering their vehement arguments against this change in iOS, I’d guess they think those off-platform streams of information are quite important. And I can see why - a user might not use Facebook for hobbies or interests, and tracking them around the web would give a much better view of someone. It’s quite sleazy.