"Because they do fear the laws that they cannot win."
Yes. That is the thing that undermines a critical difference between Watchtower's shunning program versus the instance Watchtower leverages from scripture.
The biblical instance has the local church membership informed precisely the sin for which the subject should be shunned. It didn't matter what the local "judicial" ramification could have been. But that's not what Watchtower does, and has never even attempted.
Telling is all the time and money Watchtower has spent over the years with legal wrangling to let parents opt to let their children suffer premature death rather than acquiesce to blood transfusion, yet Watchtower has at no time spent the same time and money assert a right to inform local church members of the sin for which a particular person should be shunned. Watchtower has never fought legally for this right because Watchtower does not want to always inform local membership of the supposed sin for which a member is to be shunned for.
Watchtower likes the circumstance where it can orchestrate the shunning of a person who's sin is to demand answers to questions that deserve answer.