This is a generalized comment and not directed at the OP specifically.If New York wants that, let them see how it goes. No one has to live there. This is America.
In my profession, there is routinely this push for us to be involved in other people’s local or state matters. My profession and Anesthesiologists go to war in states routinely, and I get bombarded by pleas to write their reps or whatever. I have never once done so, and never will. It is literally none of my business what happens in New York, or Washington, or California. If the people vote in people to represent them, then they can bitch and moan. But here in NC, I do not give a singular fuck about the mayor of NYC. Posts about him also have nothing to do with President Trump,
The problem with this "it's not in my backyard" sentiment is that things like what's happening in places like New York right now don't just stay there, and they don't just affect the people who live there. New York is arguably the most important city in America, and therefore the world. The NYSE is there. The UN is there. NYC is considered to be the business and financial capital of the world. It's America's biggest city. It's a fashion and cultural hub for the US and the world. Hip hop, one of my favorite music genres, originated there. The NYC metropolitan area is the US's biggest center for air traffic, and like #2 in the world for the same.
NYC is also a bellwether of politics and social change. The Stonewall riots, which helped launch the LGBT-whatever-it's-up-to-now movement, happened in New York. The Occupy movement started there. Our current president was born, raised, and rose to fame there. BLM arguably rose to national prominence there. The bottom line is, what happens in NYC affects not only the City and NY State (about 40% of NYS's population is in NYC, which gives NYC huge sway over state-level elections and policies), it affects ALL of us. We should all care what happens in places of mass influence like NYC, LA, and DC, because even if what they're trying to inflict on the rest of the country isn't affecting you right now... it eventually will.
Things like the DEI movement and the trans movement didn't just materialize out of thin air. They were incubated and allowed to fester in places like NYC and then inflicted on the rest of the country. We can ignore things happening in the areas of major influence, but we do so at our peril. Their "great ideas" can become our nightmares before we know it.
Also, when it comes to Mamdani, a literal part of his platform is the anti-Trump agenda (because of course it is). HE is making his name relevant to a discussion in a thread about Trump, not us.