Re: Why is this article about abortion?
Because when it is about "nebulous random whatever", a lot of people don't care enough to make any sort of fuss. Many many people are happy to trade Free Stuff! for some analytics, because using words like that makes it sound like some nerdy stuff and besides, it's not as if this crap actually makes any difference to them, right?
But now that there's a real world visible application where this unnecessary and unwarranted [*] data collection can be used against people because "topic that is causing people to freak out", the whole process of illicit user tracking and who can access that information is much more visible.
And people aren't liking what they're seeing (surprise!).
* - I don't count a footnote at the end of fifty pages of impenetrable legalese as "consent". Luckily I live in a jurisdiction where they don't either, though practical application and enforcement varies greatly...