I object to the word "hipster" on general principle but the more general point the musty old Wall Street Journal makes is true!
Brooklyn's litterateurs write about themselves and their friends and then are published and publicized by that same clique. This is hardly unprecedented in the annals of literature—as the critic John Leonard wrote of one of the late Manhattan literary gangs in 2006, "cohorts of scribblers have always herded together like zebras on the African veldt." But the narcissism that online platforms like Twitter and Tumblr tend to enforce has made Brooklyn books especially mystifying to non-belongers. To even begin to understand the recent memoirs by Benjamin Anastas and Jon-Jon Goulian or the new novel by parody blogger David Shapiro, you have to be a master of hipster Kremlinologyy: to know who's dating whom, who goes to whose parties and who's favoriting whose tweets.
The olds would have better arguments if they lost their fascination with "Brooklyn" and "hipsters" but other than that this is a factually accurate description of a certain segment of reality in the media world.