You are the second comment here stating this specifically about Jordan Peterson. Weirdly enough, I had that same experience. I saw one video, didn't like it and yet YT keeps recommending this and that video of him or more right-wing people DESTROYING someone. It's frustrating to say the least, not only because I don't want to see it but because I showed a video once when giving a talk, and after it had finished, all those garbage recommendations showed up for everyone to see, making it look like I am secretly some lunatic.