I think there is a bit of both at play here. Yes many ADOS have an issue with decision making that we need to address. BUT, a huge factor in that is the lineage of slavery, Jim Crow and overall racism that led to a situation with so few black people having good role models in their immediate sphere to watch and learn from. And in addition to the role model aspect, there aren't enough successful people in general in their sphere, be it friends or family...that they can talk to and model their behavior after. I had a buddy in high school that was a few years younger than me, but we were inseparable my senior year (his sophomore year). I was a really good influence on him and he was starting to mimic my good habits and was on a path to be successful. Then I left for college and he ended up with his old friends, none of which were on a path to succeed. His life fell apart in his junior year. I can't help but think that his entire life path would have been different had I not left for college.
And to respond to the part about high school drop outs vs a college grad...yes I've seen the high school dropout type person make far better decisions than some college grads, leaving them in a better situation and set up better for life.