Here's the thing. If you watch that, Netflix know your IP. If you're on an Android TV box, Google will know your IP.
Odds are your phone is on the Wifi. Linked through IP. Now you get ads for Stranger Things on your phone. It doesn't need to listen because everything is so leaky. You are linked on so many devices.
I once asked somebody for a spreadsheet (they were trying to import the data into my software and it was failing), and got back a .doc file containing a screenshot of Excel running the spreadsheet.
I was in awe of how somebody could misuse so many pieces of software at once.
I'd be a little more enthused if both companies main goal from this wasn't to make us work while wearing them.