Earlier quoted context omitted.
In my experience, its significantly more aggressive at this than it used to be. The only reason I have a Google/YouTube account in the first place is so I can go to youtube.com and see a list of reasonable interesting videos to watch, based on what I watched before. But in the last few months it keeps pushing more and more "popular" content in there, which is often complete drivel IMHO. I don't even mind if YouTube w…
Last week youtube decided to start pushing pus / pimple popping videos, and push them hard. I've never shown interest, this was purely the algorithm's idea. Gross. I had to install an extension to get it to stop because "Not Interested" and "Don't Recommend Channel" don't work in search results, even though they are turning search results into just another front page :/
I basically use YouTube only without logging in, and rely a lot on the front page for my current interests (channels I want to remember long-term go in my RSS reader). It seems like YouTube always has a channel or two it insists on pushing repeatedly no matter how often I ignore their videos.