Joseph: By now yes, but not all jews moved out of Canarsie. There was still a small number of people still living in Canarsie. Also in some communities, businesses owned by yidden (especially nursing homes that are still kosher despite havng only non-jewish residents) still have minyanim for the workers.
The outskirts of Bed-Stuy have thousands of Jews once again. Williamsburg’s Chasidim (and I think Crown Heights’ as well) have expanded into Bed-Stuy. Additionally, there are many secular Jews now living in Bed-Stuy, as a result of these Brooklyn neighborhoods’ general gentrification, including Israelis.
However, with housing prices so high, Greater Williamsburg’s future Chasidic growth is threatened on all sides.
Joseph: correct, but it’s more pronounced in Williamsburg and Crown Heights, with non locals pushing housing prices up.
The race to the top has tapered off recently, but it’s not enough for most young families to stick around when they need bigger apartments for their growing families.
It’s similar to the Chinese going after blocks in BP, but covering multiple and larger areas.