The case wasn't about whether property damage was allowed as part of labour negotiations. It was about whether the courts or the NLRB should handle the case. S

The case wasn't about whether property damage was allowed as part of labour negotiations. It was about whether the courts or the NLRB should handle the case. So this sets the precedent that a company can skip the NLRB and take their striking employees straight to court over hypothetical property damage (since in this case the trucks weren't damaged).