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.