Earlier quoted context omitted.
This is a bad take. You're assuming that incoming folks won't change the politics of funding decisions of the city. In most cases, they do change them, and change cities for the better.
Do you have an example of that? Perhaps I’m biased being in LA and SF but those city budgets seem irreplaceable broken. Infinite amounts to pensions while no one can propose viable fixes to problems.
One can imagine a better world in which pension programs are effectively time-independent w.r.t financing (neutral for growth or shrinking), and more financing comes from sources that are likely agnostic to growth or reduction (like Land Value Tax), but the politics here... are not trivial.