It's about staying true to what you were like when you were "crass enough to care", that caring about things doesn't have to stop once you reach your thirties.
He's asking whether it would be so bad to remember what you believed in when you were young and to go out and fight for it
It's about staying true to what you were like when you were "crass enough to care", that caring about things doesn't have to stop once you reach your thirties. He's asking whether it would be so bad to remember what you believed in when you were young and to go out and fight for it