IMO these sorts of questions are kneejerk reactions without any significant fore- or after-thought. They only serve to disrupt the conversation.
In so many of these police related threads on HN lately people make absurd claims and then are upset when asked about data or objectivity, which suggests people are looking to complain about something and don’t want their complaint validated with data, which is strange.
Police do everything they can to keep ethics violations from being measured. That is what the story is about. In light of that, your objection to psychometry's comment calling for oversight is quite absurd.