Yeah, that article about ignoring minor crimes sure is convincing with regard to homicide. Clearly if police stopped investigating homicides, they'd actually go down.
Fairness where it's due, given the nature of most homicides, it's fairly likely they wouldn't increase much. Consideration of those sorts of consequences don't tend to really play into the decision-making involved with most of 'em, so the preventative effect of investigation probably isn't actually particularly large.
And the response was, predictably, a misreading of the article. The police were still in operation. Just not "pro-actively". They ceased their active presence on the streets, but were still open to receiving calls and reports. And what this showed is that when they scaled back their presence in communities and intruding into people's lives, they received significantly less reports of criminal activity.
Yeah, it's debatable how relevant this is to homicide specifically, but it's something. I provided something. In fact, I provided multiple things, some of which did directly relate to homicide. Specifically, actual cases of police knowingly and willingly refusing to prevent homicides in progress, sometimes literally right in front of their faces, and then courts repeatedly ruling that they don't have any responsibility to prevent homicides if they don't want to. Pretty relevant to any claim that police are effective at reducing homicide rates. But you conveniently cherry picked the one link out of 4 that wasn't directly homicide-related.
Now if you want to be taken seriously, try providing something in response which proves that existing police equipment, protocol, or culture are at all effective at preventing homicides or crime in general. This bit here
But I'm sure your woke solution would work wonders for the US homicide rate.
is an implicit statement that disarming police would result in homicide rates getting worse than they currently are. Left unquestioned, this is meant to slip under the radar the base assumption that the current state of armed police has some desired effect of reducing or suppressing homicide rates, better than a disarmed police force would. I'm guessing you didn't expect to be asked to back this up?