As a review:
These recommendation engines are designed to maximize "retention"—keeping eyes on the screen. This has led to the fragmentation of culture. Instead of a shared "watercooler" moment where everyone discusses the same show, we now inhabit "filter bubbles." You may live in a media ecosystem of true crime documentaries and indie folk music, while your neighbor lives in a world of e-sports and political commentary. While this allows for hyper-personalization, it threatens the communal glue that shared entertainment once provided.