This.
The real gentrified areas are williamsburg (ground zero), bushwick, bed-stuy, ft. Greene, and greenpoint. Flatbush, Crown Heights, East New York, East Flatbush, New Lots, are still pretty hood. Neighborhoods like Sheepshead. Bay Ridge, Bensohurst are still pretty much ungentrified Brooklyn as well. For different reasons than the previous ones. All of those are either too far away or just too inconvenient to get to manhattan or other parts of Brooklyn on the trains (N, Q, R, 1, 2, 3, 4, 5) where you have to transfer to the F in the city or some fukkery to get back and end up taking 45+ to get anywhere.
Plus the hipsters too scared to go to those neighborhoods. And the old russian, italians, and poles in south Brooklyn don't want them or that bullshyt there.