As Baywolf and others have noted, the process used by WDFW to determine and set the regulations does not appear to comply with State Law. That is what the case is about. Basically, is the process legal?

Regardless of the complexity, if it isn't legal then a defense in court to a citation is that "this WAC is not legal, so I couldn't have violated it".

WDFW has known, for decades, that the rules regarding WAC adoption and the process they use do not fit together.