1. The NYPD isn't trying to replace their police workforce. They've simply stopped policing.
2. The current social ajd political environment would cause a hike in crime-rate regardless of police action, and it's not easy to disentangle the effects.
> Previous “slowdowns” by the NYPD have resulted in a drastic reduction in reported crime in NYC.
I couldn't find where that was mentioned in your linked article, but the Occam's razor takeaway is that the crime is still happening and not being reported because people know nothing will be done.
New York City’s homicide rate has hit a five-year high as the amount of people shot has jumped 42 percent compared to last year.
Shooting incidents have gone up 86% since last year, and the murder Rate has gone up 47%.
It's obviously a result of many different factors, but I'm not so sure the same thing that worked there would work here.