The New Yorker was founded to reflect a WASPy perspective, its celebrated founder was of rather humble background and chased that. And how many Jews, historically, were among the American elites playing polo? Your comment is well out of order.
I don't think of New York specifically or Jews at all when I see the term "coastal elites."
I think of wealthy business owners on the east and west coasts. Venture capitalists. Managers at software companies. Politicians. Just high paid and/or influential people who think highly of themselves and others in their cliques.