That's interesting, do let me know if you find the artist or an article about what happened.
I was unable to find it. Although I did find a number of songs where the artist had to tell people what it was about because they were misinterpreted. :) Same thing, slightly different scenarios.
I'll try to find the artist - but they wrote a song and the fanbase didn't "get their message".
The lyrics were supposed to be face-value but people found metaphors where no metaphors were meant to be and devised an entire story around the song that didn't exist. How it related to his childhood growing up and the struggles of his teenage years, overcoming an addiction, etc.
The artist said in an interview (Paraphrased) "That's not at all what I meant when I wrote this song - but it does sound better. So I'll take the credit."