A recommendations Netflix guy explained this quite well, people lie in their reviews, so they mostly don't matter, what matters is watching habits, those clearly show what you really like instead of the imaginary person that rates movies they'd never watch.
So the actual market for something that recommends like that is quite small.
I would disagree and say this is important if you are trying to maximize screen time, not if you are trying to maximize enjoyment. When I want to half pay attention or I am mentally tired, I put on something easy, usually something I have seen before. I watch it because it is easy and familiar, but I have no desire to watch something “similar”. If you keep pushing it, and auto playing, you could probably get me to watch similar things, but I doubt I will like them.
When I’m actually watching something, I want it to be complex, thoughtful, interesting and challenging. I don’t spend as much time watching but those are the things I watch with all of my attention.
I am actively trying to reduce my intake of low effort tv because it wastes my time, doesn’t actually give me much enjoyment, and takes attention away from things I do enjoy. It’s like comparing the books you read to doomscrolling Facebook. Reading time vs ratings are going to be very different.
So the actual market for something that recommends like that is quite small.