Funny you mention it. Heard it on my local Hot AC (WQAL/Cleveland) on my way to the park today.
Moral of the story: Not everyone will be the next Madonna, Maroon 5, or Bruno. Some artists will just have a couple years of radio relevance. Some only become one-hit wonders. That’s how it’s always been.
I like boombox’s first paragraph about the limited lifespan of artists on CHR. A decade ago, Taylor Swift and Katy Perry could belch into a microphone and it would hit #1. Both artists have had trouble getting anything to “stick” on radio lately (not that either of them need radio hits anymore).