the unrealism is that sociopathy is expressed in differing avenues. some socipaths express it sexually abusing others or deviancy, others physically violently, others by emotional/mental abuse etc, others by lying or cheating etc. some by a combination of these or some of these traits but most sociopaths do things undercover or so they don't/won't get caught, which is most people who value their life quality and continuance.
this is different.
the truth is most of society is sociopathic in traits to begin with so to just level it as sociopathy does not really show the whole picture. mass murderers have one major thing in common is they are ready to go out of this world when they commit to such actions.
most sociopaths commit actions/deeds to benefit their lives in some way, at the expense of others or certain victims which results in suffering or damage, which is the most common form of sociopathy, not to end their lives permanently. you can't use or abuse people if they are dead which true sociopaths need people alive to do so. people often assume that as long as a person does not commit murder, they are not sociopathic and that is furthest from the truth. mass murder is just one form of sociopathy.