Translation (as I see it):
The excessive budget cuts which have been made to our office make it impossible for us to do our job. We are essentially going to have to triage which cases to prosecute and which to let go because we don't have the resources to go after all the crooks.
Therefore, we are making this public threat that if you want a district attorney's office you have to pay for it, the courts do not run on magical libertarian pixie dust(TM). Hopefully you will come to your senses and restore funding. Otherwise, consider the consequences to be on your head.
You are probably correct. Still, they should could have come up with a better way than this.