If someone kills a bunch of people no amount of philosophical quibbling and defining is going to make me think that person should be allowed to continue living in society, justice simply couldn’t be a concept at all in the absence of some form of free will
Wouldn't it require an act of free will to decide that the murderer had no free will and therefore shouldn't be jailed? If we have no free will and are always acting in response to that complex array of dominos, then the judge and jury sending the murderer to prison have the same amount of choice as the murderer.