The problem is that most people don't know it's happening. If, when you first set up your Mac, you were asked "Do you want the OS to construct a social profile about you to help with ... (list of features)" and you could say yes or no.

When you do that, it's quite hard for it not to sound creepy. And most people would probably say no.

But I don't think it should be prohibited by regulation. Some people might want it, or genuinely find it useful.