I suspect their algorithm has other success metrics than "did user enjoy movie". For example if the movie is a Netfix Original or exclusive movie then it is mor

I suspect their algorithm has other success metrics than "did user enjoy movie". For example if the movie is a Netfix Original or exclusive movie then it is more valuable to Netflix because they may discuss or recommend it, which leads to more signups. Similarly they may prefer newer shows that are more likely to be discussed and raise hype than older movies that even if the user loves them may be less likely to advertise to others.