The difference is how they're consumed you don't sit down on Netflix and say "put some scifi on shuffle for 8h", you sit down and choose a show.
If you're the kind of person who would manually queue up 100% of your songs for the day then Spotify Generic songs aren't an issue. If you just hit a "2020s R&B" playlist and go that's where it feels more sketchy.
It's so funny reading this in 2025 when this is exactly how TV works. You would literally put on the SciFi channel. How far we've come.