It's an article more or less about his personal experience with Depression and OCD, on his personal blog, where he mentions several times angsty/sad songs were his escape, especially in his teens. It seems silly to pick apart who he quotes to me.

Meh, I didn't really read the quotes. The biographical elements certainly fit with my own experience of depression and (minor, not as severe as his) OCD.

I agree they didn't add anything to the article, but if you ignore them I think it's a worthwhile read.