Flatbush already has their alotment of new buses in the new scheme. It makes sense for them to get the NGs from KB because they already house and maintain a fleet of them.
Folks who live along the Flatbush routes pay taxes, but if you want true unfair treatment, consider the MTA bus division which minus the artics, has no new scheme buses at all. You may complain about buses being 10 years old, but folks in jackson heights, and jamaica are riding buses that are 12-14 years old.