I totally understand the need for sources in informed discussions, but I also feel like these topics have been so well documented that they have reached a point where asking someone for a source every time they throw out the fact that companies are "Tracking people across the web" is a contrived roadblock at best, and purposely stifling to discussion at worst.
With that said, I don't want to just single you out since this is a common practice, so I went ahead and found sources for you:
I somewhat agree, however in I don't think the parent should have been down voted. If someone doesn't regularly follow tech news then it is completely reasonable for them to have never heard of any of these incidents. In addition, the original comment was ambiguously worded as to whether he/she was talking about Netflix or acts done at other companies.
True, but in this case you could type "tech {text of bullet point}" into google and in every single instance save one, the first link returned would've been a source of the info.
Asking for a source makes sense for controversial, or hard to find information. Not when it's so commonly reported that it's the first link on google on every single topic.