This does a better job, and if I wanted I could add some addons to Sonarr or Jellyfin for new media exploration. I personally use unraid, but all this can be done on a Ubuntu or Arch Linux install with some more expertise and patience.
It’s because they dont actually have a large catalog anymore and they hide that fact with their terrible UI instead of just showing a list.
Netflix decided they didn’t care about subscriber preferences and would rather push what they want the subscriber to watch instead. Perhaps it was the moment they removed the star rating system and replaced it with thumbs up and down. The double thumbs up addition made the removal of the star rating system look utterly ridiculous. When “More Like This” recommends the same shows/movies no matter what you just watched, it becomes obvious Netflix just wants to funnel subscribers to raise viewership in certain categories or for certain programs. They don’t care what subscribers want and this is just one example of that.