Writing tickets is ringing the cash register and keeps the citizen-subjects in line. Busting crooks is an expense and a liabibility.A fearful public is a more managable public.
FWIW, If NY wanted to kick up their saging tourist trade they would let the puplic pack heat.
Cops don't want trouble. It's near the end of the month and they need revenue.
Smokers are a good bust in NYC. Easy to spot... and relatively docile. God help us!