I think they are listening and watching.
My DH does not have an iPhone - I do. He keeps asking me why he gets ads/
youtube videos pop up - after I discuss a subject with him or search the web on the subject.
I would bet money that "private messages" on FB or message boards are not private. Moderators for both have access to them - nothing is private.
I have emails - Flight info., check-in info. and it pops up on my phone screen as a reminder.
We all know that as soon as we google anything, it will pop up on every screen we are looking at (FB, message boards/IG, etc.)
Yes, most of the time, our information/likes, etc. is in the system. Those robots (or whatever they are called) are working in there. Anyone can control your computer, smart phone from a different location. It is crazy how much control someone else has. Yes, the PP is right - we sign away all our rights without reading
Pretty soon, we will just have to "think" of something and they will be able to know.