Decisions on density and zoning should remain local, because of how local these decisions and impacts can be, and how directly it impacts current local residents.
By the way I would be happy to even pay taxes to encourage economic or housing development in other cities to strike a balance between affordability and protecting quality of life. I see an often repeated false attack against anti density people that they just care about their house’s value. That’s not on my mind at all. I just don’t want to have my neighborhood crumble into every other decrepit high density city I’ve lived in previously, after building a life that fits me well over years, just because a sudden influx of newcomers want to change everything. Is that really any more “selfish” than those seeking to move in and take away local zoning and permitting process?
I think the lesson is that humans are in fact fungible, and doling out preferential treatment of them in terms of ancestry or color or economics or merely owning land isn't in the spirit of an egalitarian democracy. We certainly don't live in one of those today, but I think we like to at least pretend we do and we should strive for it.
If your city is attractive enough it will eventually be developed further, instead of fighting completely against an inevitable change it'd be good to help shape how such developments can happen in a way that won't completely erode what you like about what you and your neighbours fostered. It's a much more creative endeavour than attempting to stop the winds of change, those won't stop blowing, work with it.