I am not an Upper-Middle Class African American and I came from an impoverished community myself so I will cannot comment on your question about how Middle Class African Americans might feel. .
I am an upper middle class black woman.
My parents were in the corps diplomatique and I had the privilege of living in a number of cosmopolitan areas of the world. I certainly never experienced the ghetto, and grew up with almost exclusively white friends. I graduated with no debt.
Do I feel that I was disadvantaged? Probably not. But it is a difficult thing to say, because my upbringing was somewhat unorthodox. I went to a lot of international schools, where nobody really stuck out. I felt most awkward at college where the three black girls across the hall pounced into my room the first day and thought we had a bond. At the same time, I have dated mostly black men.
Will I benefit from AA in this cycle? Sure. My numbers are good enough to get into T14 regardless....but the URM status may get me HYS as a nice bonus. Do I feel guilty about that? Not really and I'm not sure whether I should.