I used the population growth of NYC from 2000 to 2020. During that time, while many cities like Baltimore and Detroit declined significantly, NYC grew tremendously - from 8M to somewhere between 8.4M to 8.8M. I believe the significance is that while some cities might be able to justify reducing fire and police forces because of significant population decline, NYC grew by maybe 400,00 to 800,00 inhabitants - without increasing fire companies or building new firehouses. That's like adding the city of Atlanta, or maybe 2 Atlantas, without adding an engine or a truck or firefighters. Let's not debate COVID and crime related departures of New Yorkers from the city the past few years. That's not the point. NYC has grown the past 2 decades and FDNY has not. That's why so many engine companies are doing 6000 runs. More people, more FDNY work. A lot more. So maybe there should be talk about more fire companies, not less. I think the union tries to make that point but doesn't seem to effectively get support and awareness because people who want to reduced fire budgets argue the decline in the number of fires, not overall work and lives saved.
Wikipedia NYC chart:
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