Yes this, so much this. The worst part for me is that it includes random videos you clicked on the internet with the same weight as videos I personally selected. And since they are mainly about stuff I'm not interested in it gets even more weight.
For example somebody posts on social media "Look at my cool new toy". It's a YouTube video of a guy with a brand new tractor and he's super happy about it. I like his genuine pleasure, so I give it a thumbs up. Go to sleep and wake up the next morning and YouTube be like: "Hey there, good morning. I heard you are super into tractors at the moment, so here are a million tractor vids for you."
OK, not a big deal, just pick out the videos that aren't about tractors and watch those. No big deal, the algorithm will figure it out and fix it right? Wrong, it pushes more and more tractor vids.
The next day you somehow manage to watch a non tractor video and the doorbell rings. It's your cute neighbor and you make smalltalk with him/her for a while. Oops big fuckup, autoplay was on and it just played 10+ tractor vids for you. Now you're an official tractor superfan and your whole life revolves around watching tractor vids. At least, that's what the algorithm thinks.
I wished when I watch a video embedded on another site it would just not track that as being my interest. On my phone I had it configured to play youtube vids in the browser and not in the app, that helped a lot. But an update broke it, so now I have to delete it from my watch history anytime I open a YouTube vid anywhere.
Same thing with instructional videos. I got me a nice new dishwasher, but how to hook it up? Cool, they included a QR code to the brands site with clear instructions and a helpful video on how to hook it up. But oops, they hosted that video on YouTube. Now the next two weeks it's nothing but instructions on how to hook up dishwashers you don't own. At least it fits well with all the ads you get for the dishwashers you considered buying but ultimately didn't decide on. That's really useful right? Yay algorithms