A recommendation engine knows what held your attention, not necessarily what improved your life.

What holds attention and what does you good are different things, and only the first is measurable. A system optimizing for time spent will reliably find the content that keeps you there, including everything that leaves you worse and stays gripping.

Judge by how you feel an hour later rather than by whether you kept watching. Your own retrospective verdict is the signal nobody else is measuring, and it is the only one aligned with what you actually want.