What is the Spotify monthly listener figure?

It doesn't equal streams, and it's not constant each month

William Chernoff on Spotify
Screenshot from my Spotify page showing monthly listeners at April 20, 2022.

What "Monthly listeners" actually means

In a previous Update, I linked to an article from Stereogum that said this:

"On Spotify, the band has about 250,000 monthly listeners. If you’re a person who pays attention to emerging, guitar-based indie-rock, you’re probably paying attention to Wednesday."

But do you know what monthly listeners on Spotify really means? This is the exact definition of it:

The total number of different Spotify accounts, who streamed your music at least once, during the previous 28 days.

And here are the two big clarifications that follow: