The Post just had an article about the Island Shuffle. During tourist season, workers grab whatever accommodations they can -- spare room, camper trailer, whatever -- and when the tourists leave, they move to better winter lodgings.
In any case, it is clear that if you thought others should do more for migrants, and you genuinely wanted effective aid for them, you wouldn't move them to a ******* island.
I don't know what the wage for workers on the Vineyard is like. The less affluent Cape has a lot of people just scraping by and housing must surely be cheaper on the Cape than on the Vineyard. It's my anecdotal impression that the year-rounders on the Cape consist of a lot of lower middle class workers, aside from the retirees (most of whom are also middle class).
Anyway, offering to house them on the Cape made a hell of a lot more sense than on the Vineyard, where prices are ridiculous. And the talk of living wages for migrants doesn't make much difference until they have a right to work. (On the Cape, there's a decent population of Latinos, some of whom live there permanently, so there are a couple of grocery stores catering to Portugese and Brazilian tastes. I doubt that's the case on the islands.)