I'm not sure about that. The famous Spotify discover weekly playlist suggested a chart hit to me only once since its creation years ago, and I liked it.
The release radar playlist may have more chart hits, but this one is not super smart. If you listen to a popular artist you will get all its new songs and shitty remix forever, including its chart hits.
Of course they do. Their real customers, record labels, pay handsomely for that service.