Well, stupidity might be mind boggling, but transit ridership is down in every city with transit. Every one.
Even cities where population is growing.
Perhaps you want to rethink the hypothesis?
Ridership is down because: hybrid work and empty buildings. Fewer people are commuting on fewer days. Additionally many businesses have adjusted hours to give employees a “benefit” so they don’t have to drive in rush hour, making it more convenient and impacting mass-transit which is, after all, designed to handle peak loads in morning and afternoon when traffic is (was) at its worst.
If you look across the spectrum, most major city transit systems are reporting loads of 50-75% of pre-pandemic use. This is also true whether you are measuring subways, bus ridership, downtown trolleys, etc.
Dallas has gained population in the past two years; DART ridership is at 71% of pre-pandemic levels.
Atlanta has gained population since 2021. Use of MARTA trains, busses, streetcars is down 58% this year.
It’s true that some northern cities have lost population: New York, Boston, Chicago for example, but those losses are, as a percentage, pretty small. The decrease in ridership of mass transit for 2023 is, respectively, 66%, 89%, and 66% compared to 2019. (All three of those are increasing, Y-o-Y, but remain far behind pre-pandemic levels.)
I lived in North Jersey and went to NYC pretty frequently in the 60’s. There was never a time when there was a cop in every car. There might have been more than there are today; I only go to the city once a year or so now, but somebody’s memory is playing tricks. I would say there wasn’t even a cop on every train, frankly.