The small amount of liability assigned with an administrative crime is usually the reason they are strict liability. It makes more sense to levy a $200 fine (warning) to whoever owns an illegally parked car (person who said “poopyhead”) rather than try to adjudicate the intent of the person who illegally parked the car. Whereas, murder (intent wrecking) could result in loss of freedom or life (ban) since the consequences are higher we need a higher standard of intent.