Those people didn't already come to the USA for starters, NYC has been crazily expensive for years.
There are many reasons people might have, none are good. There is for instance also a risk factor of being harassed and detained by ICE. Cruelty and incompetence are a feature of authoritarian governance, not a coincidence. So anyone going there takes a kind of risk. As has been shown, even Europeans aren't safe from the whimsical paramilitary.
EDIT: I don't think that tourism is a big factor, but as I said elsewhere, it could well be the proverbial canary in the coal mine.