This is true for serial killers in general though. Murders tend to be premeditated. If you are planning a murder you’ll look for ways to maximize your success and minimize the chance of getting caught. In modern times you don’t have to rely on pure strength; there’s a plethora of workarounds from drugs to guns. The actual desire to end a human life (usual enabled by some form of psychopathy) is the limiting factor. A serial killer personality type doesn’t throw the towel just because they are physically weak.
Never knew about transparent web proxies. Neat. Do they play a part in commercial DDOS protection? I’m thinking of those please wait while we’re evaluating your request messages that you get on some sites. But also about any methods used to prove that you are human.