I use ublock origin and privacy badger not because I am worried about privacy but because the internet is basically unusable without it. Because of this, I don't see many ads. But I have been an amazon customer since 1999 (according to what they say on their website when I'm logged in.) Looking at what they recommend for me, this personalization stuff is crap. In music, Amazon recommends bands I never listen to like…
But as I was making the exact same point a few days ago here on HN, someone responded to say that maybe it was on purpose, that if recommendations were too good they would creep us out.
Don't know what to think of it but I found the objection interesting...