This is another reason why I don’t like it when my friends or family use Facebook, because they don’t want to know if I’m on that site.
But it is not really understandable. It makes sense. It is not a hard thing to do, but it is definitely not a simple thing to do.
To be sure, Facebook does not want its users to be tracked. But given that they want to do that, they want you to be aware of it. When you sign up for Facebook, you agree to keep your information private and not share it with others. But most of the time you don’t. And so you think, “Wow, I agree to that, but I don’t really understand what it means.