Obviously, I do think that a human DJ may perform this role better in some cases/genres though.
I discovered a ton of fantastic music video Music Genome Project before the buy out, on some wonderful slick visualizations. The ability to transition this way & that around some base of music, to have a central idea & to be able to explore outwards, then come back, & transit out to another nearby genre, before coming back again... deeply compelling. MGP was great at broadening my listening horizons.
By contrast, it feels like most music services very quickly are like, "if you like this artist then you'll definitely like this ultra-popular heavily-played artist!" You're like 2 hops away from top 100 music, & they'll actively try to push you into the popular music. Please, I'd just listen to the radio if I wanted to be bored to death with pop music. Switch it up!
Create a station for Pixies. Some Bowie song plays. Ok that’s cool.
Create a station for Velvet Underground. Same Bowie song plays. Ok. I guess that makes sense.
Create a station for Warren Zevon. Same goddamned Bowie song plays!
I'm happier with a song pairing that has some arbitrary, personal history than one that's a logical walk down a relationship model.