I'd argue they need significantly more than that, if they're expected to also pay for childcare, healthcare, save for emergencies, etc. This is a polycrisis we absolutely need to take seriously lest cities become cesspools again.
"Move somewhere cheaper" ignores the reality that most good jobs are in cities nowadays, not rural or cheaper areas. It also ignores decades of calculus of the "city to save, suburbs to live" mentality that's been gradually eroded away over decades of housing mismanagement, not to mention serves as a giant middle-finger for folks who, for one reason or another, MUST live in a major city (healthcare, job prospects, career field, etc). Even if someone were to move somewhere cheaper, they'd forfeit their higher salary in the process - which would likely make the newer, cheaper location just as, if not more unaffordable than their city life was; hell, some of us were trying to move somewhere cheaper in the era of remote work, and look how that turned out. Half the planet lives in cities by UN estimates, and "moving somewhere cheaper" is the most cowardly rebuttal of the problem one could muster.
I'm also shrugging off the uninformed whinging about "welfare kings/queens". Reagan couldn't prove it, two Bushes couldn't prove it, Clinton couldn't prove it, Obama couldn't prove it, two Trumps and a Biden couldn't prove it, because they don't actually exist. Talk to people actually on benefits rather than swallow naked pro-austerity propaganda by rich people angry that their tax dollars help the working poor they themselves created in the first place, and they'll tell you how impossibly difficult it is to get benefits in the first place, nevermind keeping them. There's a vastly more evidence supporting the harms of means-testing than any WFA coming from it.
At the end of the day, NYC is not alone in these problems - but is unique in having an openly Democratic Socialist as Mayor, meaning Capital has a vested interest in pinning all the ills to him and astroturfing the same austerity bullshit that worked with Reagan et al to try and defend the problems they caused in the first place. America cannot roll back to an era where six-figure salaries meant you were "rich" and five-figures were the norm, so we need to build an America where said salaries at least cover essentials again and where median incomes can afford median housing.