Maybe I misunderstand this part, but it sounds like the author feels like it's required to suffer in order to produce something creative in the first place, and other artists that haven't suffered "enough" but produce things anyways, aren't actually creating "genuine" music.

Of course, everyone creates things from their own perspective and context, but it kind of feels like a trap that somehow suffering is essential to the artistic process, which I personally don't feel would be a healthy perspective for myself as a musician at least.