The average rent, per person, in NYC is $2k-$4k. I do not believe most people have the money to support migrants, and neither are most people planning their finances with that expectation that a larger portion of their income is going to migrants.
Remember even $120k is around $84k take home. Minus rent ($24k low end apartment rent), you are left with $40k (after 401k and healthcare). Adding migrant costs, what is the point of living in NYC at that point...
I'm saying what is the point for the average New Yorker. The migrants are putting a strain on people who live in NYC legally, imagine out of the blue you are losing a huge portion of your paycheck in an already expensive city. Waves of migrants showing up in a city is unfair to the people.