It's a different DA, but the current Manhattan DA (who appears to be from the same school of thought as the one under discussion), upon taking office in January 2022, issued a written policy memorandum which stated that his office will stop prosecuting, among other things, trespass, jumping the turnstiles, and driving without a license or on a suspended license; and further downgraded burglaries and drug cases, in some cases from what the text of the law classifies as a felony down to a misdemeanor.

Does it say anywhere on that memo that attempted murder would not be prosecuted? Of course not. Do these policies generally increase the feeling of lawlessness in the jurisdiction? Yes. Might that precipitate higher degrees of lawlessness? You be the judge.