I believe the rhetoric is intentional; that the author had no plan to convert that audience from whom you will pry their ring doorbell out of their cold, dead hands.
Fringe leftists who got one of these without thinking, I guess.
Does the thesis that people get these out of paranoia have any basis? I use mine for basic convenience, like seeing that a package was delivered, or seeing that the person at the door is a solicitor so I don't have to walk downstairs and shoo him away. Crime is not even on my mind with this thing and I point it so it can only see my stoop, not the street. Maybe I'm the weird one?