That's pretty funny and certainly something I have noticed, though I don't watch videos as often. I have certainly been aware of that type of crap!
The other day I was trying to watch a clip on YuT#be and it absolutely refused for me to watch it even though it was just a bunch of dudes playing soccer or something, unless I signed into the app. I was on Private mode in my browser since I didn't want cookies doing nefarious things and sticking around, but they were very upset about that. Fuck these vulture companies and their creepy ass data policies!