Lyrics are a major part of the interview, with Kelly defending a recent lyric-related Internet controversy - which you could probably generalize to cover other forms of entertainment too:
He also quotes Billie Joe Armstrong on the subject of lyrics saying:
Tegan and Sara's [Sara Quinn] came out with this huge internet ramble about how she can't believe people are okay with Tyler The Creator, talking about raping people. Since when does singing about raping someone mean that you're raping someone?" It's insulting to the audience to say- I mean, I listened to N.W.A. constantly when I was a kid, and I have never once held a gun in someone's face, slapped a bitch… It's completely fucking ridiculous to me that people are like, "Oh, if the audience is glorifying that kind of behavior, people are gonna be out there doing that kind of shit." Well, those people are stupid assholes who are gonna be doing something stupid anyway.
Check out the whole thing here.
So I was thinking about this interview I read with Billie Joe Armstrong around '99, and he said something to the effect of: "The way I know if my lyrics are good is if I'm nervous to sing them in front of people."