YouTube Video Recommendations Lead to More Extremist Content for Right-Leaning Users, Researchers Suggest::New research shows that a person’s ideological leaning might affect what videos YouTube’s algorithms recommend to them. For right-leaning users, video recommendations are more likely to come from channels that share political extremism, conspiracy theories and otherwise problematic content.
I think they are AB testing no recommendations when not signed out. I use youtube not signed out a lot of the time and around 20% of the time when I open a tab with no cookies it shows no recommendations. Try again opening incognito mode a couple more times and you might see the recommendations.