Have America's most popular cities lost their "edge"?

I was reading this article this morning about how New York City has lost its edge, and just become an overpriced, cookie-cutter city that no one wants to visit or move to anymore. Reading the comments, people have said the same about New Orleans, Chicago, and LA just to name a few.
My question is: Do you agree that New York has lost its edge, and will soon become a ghost town?