Complete garbage seems like an overstatement to me. Boar’s Head is sort of the Stella Artois of cold cuts. Not horrible but more a triumph of marketing than true quality.
Wally’s Cheese Box in Westwood has a pretty decent selection of imported meats. I’m guessing Eataly will too, when it finally opens. But don’t sleep on domestic cold cuts. For example, if you find yourself up in SF, Molinari makes great dried salami.