Comment by LarsAlereon

They're in the shorts section, which seems to have very different recommendation results compared to the regular feed. My regular Youtube video feed is almost exclusively stuff that's similar to what I usually watch, to the point where I need to go hunting for new content. My shorts feed clearly reacts to what I watch, but I get a lot more content that's well outside my interests, including new uploads by random users and alt-right garbage. The alt-right stuff is usually a reupload by some tiny account so it seems like there's a concerted effort to keep putting it in the feeds.