Barack shouldn't represent that stereotype, but people credit him for it and energize his persona on those sympathiesSo, Cuban's actual words, in the blog post we are all discussing, that I guess you're referring to were:
"In a single day of voting, our amazing country once again reinvigorated the dream that any child in this country, no matter what circumstances they are born into, can grow up to be anything they want, including President of the United States."
I'm not seeing anything about two black parents and being very poor in a poor neighborhood anywhere in the blog post. I didn't take the post to mean, "He was an inner city gangster and he became president, so put down your guns and drugs and go run for state senate!!!111!!"
I took it to mean exactly what he said, that Obama being elected president is a great way to show a kid that they can grow up to be anything they want, and that America won't limit them based on the color of their skin or whether they grew up without the benefits of two wealthy, married, parents and a private school education (because Obama clearly does have much darker skin than any of our prior presidents, though we have had a few presidents with black folks in their family tree, even if it doesn't get talked about much). He is "black" by the definition that matters in this context: The definition that racists follow, since racism is the barrier we're talking about. He looks black, so he is black to the Klan and anybody else that holds that sort of philosophy.
to the detriment of those who really come from such a background
How is it to the detriment of anyone?