>>213852689
IRL serial killers are unironically like 80 IQ on average and extremely mentally unwell.
If someone had a reason to hide like Dexter and still the desire to kill they could easily get a similar kill count, just not all in one area like him.
If you want to kill people though random no motive shootings on the side of the road or in a large public area with hunting are unsolvable cases.
It's just that's not what people do, they want to rape and torture and control not just kill.