Ironically that Gruber comment was about the "user-enhancing" Sponsored Tiles episode from early 2014. That we are still seeing questionable and un-telegraphed behavior in 2019 suggests none of the privacy-relevant lessons were taken to heart.
Excellent way of shifting the goalpost away from your stance on the Booking.com case. :)
Displaying the same ad to everyone doesn't have privacy consequences. It's why billboards aren't privacy issues, nor are the TV ads, nor ads in a magazine. Ad networks are a privacy issue, self-hosted ads are not.
