My point is that that is a very sensible bumper sticker, because it only applies if someone thinks they want to steal the truck, clearly valuing their life less than the truck, proving the sticker’s point.

It’s a common sticker. People who are shot in a robbery (or their kin if they don’t survive) commonly claim “why would the victim who defended themselves value their stuff more than the thief’s life” without failing to consider the thief themselves valued their own life less than the stuff they were attempting to steal.

It’s a common sentiment in free places, those who values abiding citizens more than law breaking citizens.