The way Spotify works she probably would have received the lion’s share of the artist portion of all Spotify ad/subscription revenue the month her album came out based on listen time. Apple just gave her marketing/guarantee money on top.
For most local bands, nobody discovers you on Spotify. People find out about your band because you shared a show with another band they like.
After you are discovered by the new fan, they may later search for you on Spotify. But Bandcamp is more likely.
That assumes they even remember who you are. You have to play multiple shows in some areas, make a big impact on the audience, maybe have your stuff played on the local college station and then, just maybe, people will give a shit about you.
Lots of good music on bandcamp with less than 30 plays, and that's why.
What streaming does is that it makes it so much easier to check out a band when a friend says "hey, give this band a listen, they're pretty good!". The initial recommendation comes from a friend, usually not the streaming service.
This is why you hear Taylor Swift complaining about Spotify royalties but not your favorite indie bands. We're seeing a shift towards the long-tail that's only going to accelerate as future generations are brought up on streaming instead of mass-marketed music.