>The logic is basically that low-income minorities can't be trusted to raise their own children, so the government needs to step in and separate them from their kids

In general this is true. There is a serious culture change that needs to happen and the parents aren't doing it. This is coming from a black man that has seen first hand the toxic culture a lot of these kids grow up in.

>The program revolves entirely around extrinsic motivation, which will prevent most of these kids from actually maturing into adults and being able to handle anything beyond minimum wage jobs.

I see some version of this argument trotted out all the time, and frankly its nonsense. The majority of kids, rich poor black white, do not have the motivation to learn or try hard at school on their own. It is only through extrinsic motivations that these kids are able to succeed: parents, peers, culture. This is precisely exactly what poor inner-city kids lack. Any program that aims to change the trajectory of black achievement must address these issues head-on. There is absolutely no place for political correctness in these discussions; this is entire generations of kids being lost to low achievement and poor future prospects.