Man, if $75k is poverty in NYC then 2/3 of NYC lives in poverty! Is it really the case that only the top third of New Yorkers can be said to be non-poor?
If you were given a tour of some of the $1000-$1500 a month apartments in the Lower East Side and didn't know their cost, you'd certainly describe them as "impoverished" living conditions. The next level of rent in NYC ($1500-$2200) doesn't generally get you space past 800 square feet in the city (New Yorkers call Manhattan "The City," not the boroughs, FYI). There is also a fee system in NYC for renting any apartment via a realtor - which is one of the only ways of getting a good place. The fee is usually a full-months rent that you pay to the realtor and never get back. So...if you're going to rent an $1000-a-month apartment here that you found via a realtor you pay the first months rent ($1000) last months rent ($1000) the fee ($1000) and a security deposit ($1000) making you're bill before moving expenses $4000. With all combined moving expenses you can easily pay $8000 to move a half-mile to a place that's the same price as the one you're living in now. All of this doesn't even factor in all the shenanigans you'll encounter while trying to beat 20 other people on signing the lease.
My wife and I live in NYC and we've estimated that for a husband and wife to live comfortably here (including going out to dinner once a week, belonging to a gym, being able to leave the city every other weekend, etc) you have to make around a combined income of $300k.
People in NYC tend to be so used to sacrificing basics to live here that they've forgotten what poverty means to the rest of the country (this includes people who make 75K here.) NYC's super-wealthy on the other-hand are these maladjusted weirdos who have nothing to do besides be paranoid about who's trying to take their money and contribute little or nothing to society. Most students here could also easily be deemed as impoverished. I've known some who go on sugar packet raids at bodegas and Starbucks as a way to save money.
I just heard a quote the other day (can't remember where) about NYC. "It's heaven and hell." That about sums it up.