This would create vigilantism as the norm. The average person doesn’t care about these silly theories; they want dangerous criminals kept away from their families, and if that isn’t done they’ll do it themselves. (And when they do, then what? You gonna . . . put them in prison?)
I'm a prison abolitionist for lots of reasons. One is that I find it unacceptably cruel as a form of social organization to lock people in cages and tell them they'll be beaten or killed if they try to get out.
