Yeah, and his FIP or xFIP or whichever of those particular silly stats gets overused is probably about -3.50 because he has zero walks and 7 Ks. (Seriously, though, the FIP for 5 IP with 11 hits and 6 ER allowed, including 2 homers, is 2.40, as long as you have 7 Ks and no walks. And people think it's a useful stat.)
Pity about the things that actually matter.
FIP is probably useful for agents trying to argue that their client can't be blamed for a lack of defense around him. As an in-game play measure, I agree that I don't know what it's value is.
That to me is true of a lot of the advanced metrics bandied about. Some are useful for an agent or GM trying to decide if a player would be of use to a particular team, some are useful to the GM and manager in planning out how to develop and use a player over the course of the season, some are useful to the manager in making decisions about line-ups, match-ups, etc. when planning out games, and some might be useful in making decisions within games. None is really any sort of be-all/end-all measure of how good or bad a player is.