Yep, what he said.
And to me, typical metal lyrics are those that talk about murder, Satan, hell, violence, horror-ish themes and so on. Which, obviously I know isn't what all metal bands are about, and even some of the ones who are about that DO pull them off well. But I listen to the lyrics that Paul or Jonas or someone like that has written, and they are more in a league with the songwriters of old, the late 1960s and 1970s singer/songwriters who can still have dark themes and despair in their lyrics without them being quite so typical, and usually spoken a bit more from the heart.